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Finding the Fourth Proportional to 10,687.70, 14,748.57 and 5,907.40

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Solution

The fourth proportional to 10,687.70, 14,748.57 and 5,907.40 is: 8,151.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,687.70 : 14,748.57 = 5,907.40 : x
  2. Step 2: Convert to fraction form
    10,687.70/14,748.57 = 5,907.40/x
  3. Step 3: Cross multiply
    10,687.70x = 14,748.57 × 5,907.40
  4. Step 4: Simplify right side
    10,687.70x = 87,125,599.14
  5. Step 5: Solve for x
    x = 87,125,599.14/10,687.70
  6. Step 6: Final answer
    x = 8,151.95

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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.