Home / 9,122.48-12,588.80-5,143.56

Finding the Fourth Proportional to 9,122.48, 12,588.80 and 5,143.56

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Solution

The fourth proportional to 9,122.48, 12,588.80 and 5,143.56 is: 7,097.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,122.48 : 12,588.80 = 5,143.56 : x
  2. Step 2: Convert to fraction form
    9,122.48/12,588.80 = 5,143.56/x
  3. Step 3: Cross multiply
    9,122.48x = 12,588.80 × 5,143.56
  4. Step 4: Simplify right side
    9,122.48x = 64,751,248.13
  5. Step 5: Solve for x
    x = 64,751,248.13/9,122.48
  6. Step 6: Final answer
    x = 7,097.99

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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.