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Finding the Fourth Proportional to 8,530.64, 12,776.76 and 6,343.12

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Solution

The fourth proportional to 8,530.64, 12,776.76 and 6,343.12 is: 9,500.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,530.64 : 12,776.76 = 6,343.12 : x
  2. Step 2: Convert to fraction form
    8,530.64/12,776.76 = 6,343.12/x
  3. Step 3: Cross multiply
    8,530.64x = 12,776.76 × 6,343.12
  4. Step 4: Simplify right side
    8,530.64x = 81,044,521.89
  5. Step 5: Solve for x
    x = 81,044,521.89/8,530.64
  6. Step 6: Final answer
    x = 9,500.40

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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.