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Finding the Fourth Proportional to 7,377.88, 10,175.88 and 5,139.76

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Solution

The fourth proportional to 7,377.88, 10,175.88 and 5,139.76 is: 7,088.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,377.88 : 10,175.88 = 5,139.76 : x
  2. Step 2: Convert to fraction form
    7,377.88/10,175.88 = 5,139.76/x
  3. Step 3: Cross multiply
    7,377.88x = 10,175.88 × 5,139.76
  4. Step 4: Simplify right side
    7,377.88x = 52,301,580.99
  5. Step 5: Solve for x
    x = 52,301,580.99/7,377.88
  6. Step 6: Final answer
    x = 7,088.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.