Home / 1,747.31-2,620.49-514.40

Finding the Fourth Proportional to 1,747.31, 2,620.49 and 514.40

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Solution

The fourth proportional to 1,747.31, 2,620.49 and 514.40 is: 771.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,747.31 : 2,620.49 = 514.40 : x
  2. Step 2: Convert to fraction form
    1,747.31/2,620.49 = 514.40/x
  3. Step 3: Cross multiply
    1,747.31x = 2,620.49 × 514.40
  4. Step 4: Simplify right side
    1,747.31x = 1,347,964.38
  5. Step 5: Solve for x
    x = 1,347,964.38/1,747.31
  6. Step 6: Final answer
    x = 771.45

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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.