Home / 5,140.10-7,710.15-2,221.70

Finding the Fourth Proportional to 5,140.10, 7,710.15 and 2,221.70

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Solution

The fourth proportional to 5,140.10, 7,710.15 and 2,221.70 is: 3,332.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,140.10 : 7,710.15 = 2,221.70 : x
  2. Step 2: Convert to fraction form
    5,140.10/7,710.15 = 2,221.70/x
  3. Step 3: Cross multiply
    5,140.10x = 7,710.15 × 2,221.70
  4. Step 4: Simplify right side
    5,140.10x = 17,129,640.26
  5. Step 5: Solve for x
    x = 17,129,640.26/5,140.10
  6. Step 6: Final answer
    x = 3,332.55

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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.