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Finding the Fourth Proportional to 8,385.76, 12,581.70 and 4,437.24

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Solution

The fourth proportional to 8,385.76, 12,581.70 and 4,437.24 is: 6,657.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,385.76 : 12,581.70 = 4,437.24 : x
  2. Step 2: Convert to fraction form
    8,385.76/12,581.70 = 4,437.24/x
  3. Step 3: Cross multiply
    8,385.76x = 12,581.70 × 4,437.24
  4. Step 4: Simplify right side
    8,385.76x = 55,828,022.51
  5. Step 5: Solve for x
    x = 55,828,022.51/8,385.76
  6. Step 6: Final answer
    x = 6,657.48

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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.