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Finding the Fourth Proportional to 8,723.76, 13,085.64 and 5,807.76

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Solution

The fourth proportional to 8,723.76, 13,085.64 and 5,807.76 is: 8,711.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,723.76 : 13,085.64 = 5,807.76 : x
  2. Step 2: Convert to fraction form
    8,723.76/13,085.64 = 5,807.76/x
  3. Step 3: Cross multiply
    8,723.76x = 13,085.64 × 5,807.76
  4. Step 4: Simplify right side
    8,723.76x = 75,998,256.57
  5. Step 5: Solve for x
    x = 75,998,256.57/8,723.76
  6. Step 6: Final answer
    x = 8,711.64

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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.