Home / 7,472.90-11,209.35-5,140.10

Finding the Fourth Proportional to 7,472.90, 11,209.35 and 5,140.10

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Solution

The fourth proportional to 7,472.90, 11,209.35 and 5,140.10 is: 7,710.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,472.90 : 11,209.35 = 5,140.10 : x
  2. Step 2: Convert to fraction form
    7,472.90/11,209.35 = 5,140.10/x
  3. Step 3: Cross multiply
    7,472.90x = 11,209.35 × 5,140.10
  4. Step 4: Simplify right side
    7,472.90x = 57,617,179.94
  5. Step 5: Solve for x
    x = 57,617,179.94/7,472.90
  6. Step 6: Final answer
    x = 7,710.15

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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.