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Finding the Fourth Proportional to 2,239.40, 3,357.76 and 922.13

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Solution

The fourth proportional to 2,239.40, 3,357.76 and 922.13 is: 1,382.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,239.40 : 3,357.76 = 922.13 : x
  2. Step 2: Convert to fraction form
    2,239.40/3,357.76 = 922.13/x
  3. Step 3: Cross multiply
    2,239.40x = 3,357.76 × 922.13
  4. Step 4: Simplify right side
    2,239.40x = 3,096,291.23
  5. Step 5: Solve for x
    x = 3,096,291.23/2,239.40
  6. Step 6: Final answer
    x = 1,382.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.