Home / 9,122.12-12,588.54-5,143.22

Finding the Fourth Proportional to 9,122.12, 12,588.54 and 5,143.22

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Solution

The fourth proportional to 9,122.12, 12,588.54 and 5,143.22 is: 7,097.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,122.12 : 12,588.54 = 5,143.22 : x
  2. Step 2: Convert to fraction form
    9,122.12/12,588.54 = 5,143.22/x
  3. Step 3: Cross multiply
    9,122.12x = 12,588.54 × 5,143.22
  4. Step 4: Simplify right side
    9,122.12x = 64,745,675.03
  5. Step 5: Solve for x
    x = 64,745,675.03/9,122.12
  6. Step 6: Final answer
    x = 7,097.66

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Half scale
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Double scale
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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.