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Finding the Fourth Proportional to 8,777.64, 13,103.88 and 8,470.08

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Solution

The fourth proportional to 8,777.64, 13,103.88 and 8,470.08 is: 12,644.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,777.64 : 13,103.88 = 8,470.08 : x
  2. Step 2: Convert to fraction form
    8,777.64/13,103.88 = 8,470.08/x
  3. Step 3: Cross multiply
    8,777.64x = 13,103.88 × 8,470.08
  4. Step 4: Simplify right side
    8,777.64x = 110,990,911.91
  5. Step 5: Solve for x
    x = 110,990,911.91/8,777.64
  6. Step 6: Final answer
    x = 12,644.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.