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Finding the Fourth Proportional to 7,390.87, 10,117.76 and 7,338.12

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Solution

The fourth proportional to 7,390.87, 10,117.76 and 7,338.12 is: 10,045.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,390.87 : 10,117.76 = 7,338.12 : x
  2. Step 2: Convert to fraction form
    7,390.87/10,117.76 = 7,338.12/x
  3. Step 3: Cross multiply
    7,390.87x = 10,117.76 × 7,338.12
  4. Step 4: Simplify right side
    7,390.87x = 74,245,337.01
  5. Step 5: Solve for x
    x = 74,245,337.01/7,390.87
  6. Step 6: Final answer
    x = 10,045.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.