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Finding the Fourth Proportional to 8,765.90, 12,097.22 and 5,408.63

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Solution

The fourth proportional to 8,765.90, 12,097.22 and 5,408.63 is: 7,464.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,765.90 : 12,097.22 = 5,408.63 : x
  2. Step 2: Convert to fraction form
    8,765.90/12,097.22 = 5,408.63/x
  3. Step 3: Cross multiply
    8,765.90x = 12,097.22 × 5,408.63
  4. Step 4: Simplify right side
    8,765.90x = 65,429,387.01
  5. Step 5: Solve for x
    x = 65,429,387.01/8,765.90
  6. Step 6: Final answer
    x = 7,464.08

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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.