Home / 1,347.04-2,020.58-422.56

Finding the Fourth Proportional to 1,347.04, 2,020.58 and 422.56

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Solution

The fourth proportional to 1,347.04, 2,020.58 and 422.56 is: 633.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,347.04 : 2,020.58 = 422.56 : x
  2. Step 2: Convert to fraction form
    1,347.04/2,020.58 = 422.56/x
  3. Step 3: Cross multiply
    1,347.04x = 2,020.58 × 422.56
  4. Step 4: Simplify right side
    1,347.04x = 853,816.28
  5. Step 5: Solve for x
    x = 853,816.28/1,347.04
  6. Step 6: Final answer
    x = 633.85

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Double scale
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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.