Home / 5,520.35-7,619.18-3,130.37

Finding the Fourth Proportional to 5,520.35, 7,619.18 and 3,130.37

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Solution

The fourth proportional to 5,520.35, 7,619.18 and 3,130.37 is: 4,320.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,520.35 : 7,619.18 = 3,130.37 : x
  2. Step 2: Convert to fraction form
    5,520.35/7,619.18 = 3,130.37/x
  3. Step 3: Cross multiply
    5,520.35x = 7,619.18 × 3,130.37
  4. Step 4: Simplify right side
    5,520.35x = 23,850,827.32
  5. Step 5: Solve for x
    x = 23,850,827.32/5,520.35
  6. Step 6: Final answer
    x = 4,320.53

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.