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Finding the Fourth Proportional to 8,772, 13,154.80 and 2,926.88

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Solution

The fourth proportional to 8,772, 13,154.80 and 2,926.88 is: 4,389.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,772 : 13,154.80 = 2,926.88 : x
  2. Step 2: Convert to fraction form
    8,772/13,154.80 = 2,926.88/x
  3. Step 3: Cross multiply
    8,772x = 13,154.80 × 2,926.88
  4. Step 4: Simplify right side
    8,772x = 38,502,521.02
  5. Step 5: Solve for x
    x = 38,502,521.02/8,772
  6. Step 6: Final answer
    x = 4,389.25

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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.