Home / 9,115.12-12,577.48-5,337.68

Finding the Fourth Proportional to 9,115.12, 12,577.48 and 5,337.68

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Solution

The fourth proportional to 9,115.12, 12,577.48 and 5,337.68 is: 7,365.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,115.12 : 12,577.48 = 5,337.68 : x
  2. Step 2: Convert to fraction form
    9,115.12/12,577.48 = 5,337.68/x
  3. Step 3: Cross multiply
    9,115.12x = 12,577.48 × 5,337.68
  4. Step 4: Simplify right side
    9,115.12x = 67,134,563.45
  5. Step 5: Solve for x
    x = 67,134,563.45/9,115.12
  6. Step 6: Final answer
    x = 7,365.19

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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.