Home / 7,485.70-11,228.55-3,106.30

Finding the Fourth Proportional to 7,485.70, 11,228.55 and 3,106.30

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Solution

The fourth proportional to 7,485.70, 11,228.55 and 3,106.30 is: 4,659.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,485.70 : 11,228.55 = 3,106.30 : x
  2. Step 2: Convert to fraction form
    7,485.70/11,228.55 = 3,106.30/x
  3. Step 3: Cross multiply
    7,485.70x = 11,228.55 × 3,106.30
  4. Step 4: Simplify right side
    7,485.70x = 34,879,244.87
  5. Step 5: Solve for x
    x = 34,879,244.87/7,485.70
  6. Step 6: Final answer
    x = 4,659.45

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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.