Home / 1,641.50-2,265.28-942.88

Finding the Fourth Proportional to 1,641.50, 2,265.28 and 942.88

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Solution

The fourth proportional to 1,641.50, 2,265.28 and 942.88 is: 1,301.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,641.50 : 2,265.28 = 942.88 : x
  2. Step 2: Convert to fraction form
    1,641.50/2,265.28 = 942.88/x
  3. Step 3: Cross multiply
    1,641.50x = 2,265.28 × 942.88
  4. Step 4: Simplify right side
    1,641.50x = 2,135,887.21
  5. Step 5: Solve for x
    x = 2,135,887.21/1,641.50
  6. Step 6: Final answer
    x = 1,301.18

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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.