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Finding the Fourth Proportional to 8,780.00, 13,154.05 and 5,074.40

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Solution

The fourth proportional to 8,780.00, 13,154.05 and 5,074.40 is: 7,602.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,780.00 : 13,154.05 = 5,074.40 : x
  2. Step 2: Convert to fraction form
    8,780.00/13,154.05 = 5,074.40/x
  3. Step 3: Cross multiply
    8,780.00x = 13,154.05 × 5,074.40
  4. Step 4: Simplify right side
    8,780.00x = 66,748,950.55
  5. Step 5: Solve for x
    x = 66,748,950.55/8,780.00
  6. Step 6: Final answer
    x = 7,602.39

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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.