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Finding the Fourth Proportional to 8,878.84, 12,257.58 and 6,470.80

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Solution

The fourth proportional to 8,878.84, 12,257.58 and 6,470.80 is: 8,933.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,878.84 : 12,257.58 = 6,470.80 : x
  2. Step 2: Convert to fraction form
    8,878.84/12,257.58 = 6,470.80/x
  3. Step 3: Cross multiply
    8,878.84x = 12,257.58 × 6,470.80
  4. Step 4: Simplify right side
    8,878.84x = 79,316,348.66
  5. Step 5: Solve for x
    x = 79,316,348.66/8,878.84
  6. Step 6: Final answer
    x = 8,933.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.