Home / 9,193.31-12,686.38-5,215.17

Finding the Fourth Proportional to 9,193.31, 12,686.38 and 5,215.17

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Solution

The fourth proportional to 9,193.31, 12,686.38 and 5,215.17 is: 7,196.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,193.31 : 12,686.38 = 5,215.17 : x
  2. Step 2: Convert to fraction form
    9,193.31/12,686.38 = 5,215.17/x
  3. Step 3: Cross multiply
    9,193.31x = 12,686.38 × 5,215.17
  4. Step 4: Simplify right side
    9,193.31x = 66,161,681.75
  5. Step 5: Solve for x
    x = 66,161,681.75/9,193.31
  6. Step 6: Final answer
    x = 7,196.72

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Double scale
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Similar ratio
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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.