Home / 5,139.20-7,716.09-4,904.30

Finding the Fourth Proportional to 5,139.20, 7,716.09 and 4,904.30

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Solution

The fourth proportional to 5,139.20, 7,716.09 and 4,904.30 is: 7,363.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,139.20 : 7,716.09 = 4,904.30 : x
  2. Step 2: Convert to fraction form
    5,139.20/7,716.09 = 4,904.30/x
  3. Step 3: Cross multiply
    5,139.20x = 7,716.09 × 4,904.30
  4. Step 4: Simplify right side
    5,139.20x = 37,841,981.61
  5. Step 5: Solve for x
    x = 37,841,981.61/5,139.20
  6. Step 6: Final answer
    x = 7,363.41

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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.