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Finding the Fourth Proportional to 8,521.66, 12,765.18 and 4,302.31

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Solution

The fourth proportional to 8,521.66, 12,765.18 and 4,302.31 is: 6,444.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,521.66 : 12,765.18 = 4,302.31 : x
  2. Step 2: Convert to fraction form
    8,521.66/12,765.18 = 4,302.31/x
  3. Step 3: Cross multiply
    8,521.66x = 12,765.18 × 4,302.31
  4. Step 4: Simplify right side
    8,521.66x = 54,919,697.74
  5. Step 5: Solve for x
    x = 54,919,697.74/8,521.66
  6. Step 6: Final answer
    x = 6,444.72

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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.