Home / 9,577.20-13,215.60-5,385.12

Finding the Fourth Proportional to 9,577.20, 13,215.60 and 5,385.12

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Solution

The fourth proportional to 9,577.20, 13,215.60 and 5,385.12 is: 7,430.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,577.20 : 13,215.60 = 5,385.12 : x
  2. Step 2: Convert to fraction form
    9,577.20/13,215.60 = 5,385.12/x
  3. Step 3: Cross multiply
    9,577.20x = 13,215.60 × 5,385.12
  4. Step 4: Simplify right side
    9,577.20x = 71,167,591.87
  5. Step 5: Solve for x
    x = 71,167,591.87/9,577.20
  6. Step 6: Final answer
    x = 7,430.94

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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.