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Finding the Fourth Proportional to 8,437.69, 12,657.84 and 3,759.32

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Solution

The fourth proportional to 8,437.69, 12,657.84 and 3,759.32 is: 5,639.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,437.69 : 12,657.84 = 3,759.32 : x
  2. Step 2: Convert to fraction form
    8,437.69/12,657.84 = 3,759.32/x
  3. Step 3: Cross multiply
    8,437.69x = 12,657.84 × 3,759.32
  4. Step 4: Simplify right side
    8,437.69x = 47,584,871.07
  5. Step 5: Solve for x
    x = 47,584,871.07/8,437.69
  6. Step 6: Final answer
    x = 5,639.56

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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.