Home / 9,165.74-12,649.54-5,387.01

Finding the Fourth Proportional to 9,165.74, 12,649.54 and 5,387.01

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Solution

The fourth proportional to 9,165.74, 12,649.54 and 5,387.01 is: 7,434.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,165.74 : 12,649.54 = 5,387.01 : x
  2. Step 2: Convert to fraction form
    9,165.74/12,649.54 = 5,387.01/x
  3. Step 3: Cross multiply
    9,165.74x = 12,649.54 × 5,387.01
  4. Step 4: Simplify right side
    9,165.74x = 68,143,269.55
  5. Step 5: Solve for x
    x = 68,143,269.55/9,165.74
  6. Step 6: Final answer
    x = 7,434.56

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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.