Home / 9,122.49-12,588.99-5,143.64

Finding the Fourth Proportional to 9,122.49, 12,588.99 and 5,143.64

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Solution

The fourth proportional to 9,122.49, 12,588.99 and 5,143.64 is: 7,098.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,122.49 : 12,588.99 = 5,143.64 : x
  2. Step 2: Convert to fraction form
    9,122.49/12,588.99 = 5,143.64/x
  3. Step 3: Cross multiply
    9,122.49x = 12,588.99 × 5,143.64
  4. Step 4: Simplify right side
    9,122.49x = 64,753,150.29
  5. Step 5: Solve for x
    x = 64,753,150.29/9,122.49
  6. Step 6: Final answer
    x = 7,098.19

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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.