Home / 5,140.28-7,710.42-1,677.50

Finding the Fourth Proportional to 5,140.28, 7,710.42 and 1,677.50

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Solution

The fourth proportional to 5,140.28, 7,710.42 and 1,677.50 is: 2,516.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,140.28 : 7,710.42 = 1,677.50 : x
  2. Step 2: Convert to fraction form
    5,140.28/7,710.42 = 1,677.50/x
  3. Step 3: Cross multiply
    5,140.28x = 7,710.42 × 1,677.50
  4. Step 4: Simplify right side
    5,140.28x = 12,934,229.55
  5. Step 5: Solve for x
    x = 12,934,229.55/5,140.28
  6. Step 6: Final answer
    x = 2,516.25

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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.