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Finding the Fourth Proportional to 7,200.04, 10,800.06 and 5,558.98

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Solution

The fourth proportional to 7,200.04, 10,800.06 and 5,558.98 is: 8,338.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,200.04 : 10,800.06 = 5,558.98 : x
  2. Step 2: Convert to fraction form
    7,200.04/10,800.06 = 5,558.98/x
  3. Step 3: Cross multiply
    7,200.04x = 10,800.06 × 5,558.98
  4. Step 4: Simplify right side
    7,200.04x = 60,037,317.54
  5. Step 5: Solve for x
    x = 60,037,317.54/7,200.04
  6. Step 6: Final answer
    x = 8,338.47

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.