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Finding the Fourth Proportional to 7,491.37, 10,381.79 and 7,385.66

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Solution

The fourth proportional to 7,491.37, 10,381.79 and 7,385.66 is: 10,235.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,491.37 : 10,381.79 = 7,385.66 : x
  2. Step 2: Convert to fraction form
    7,491.37/10,381.79 = 7,385.66/x
  3. Step 3: Cross multiply
    7,491.37x = 10,381.79 × 7,385.66
  4. Step 4: Simplify right side
    7,491.37x = 76,676,415.55
  5. Step 5: Solve for x
    x = 76,676,415.55/7,491.37
  6. Step 6: Final answer
    x = 10,235.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.