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Finding the Fourth Proportional to 1,747.12, 2,619.55 and 925.78

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Solution

The fourth proportional to 1,747.12, 2,619.55 and 925.78 is: 1,388.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,747.12 : 2,619.55 = 925.78 : x
  2. Step 2: Convert to fraction form
    1,747.12/2,619.55 = 925.78/x
  3. Step 3: Cross multiply
    1,747.12x = 2,619.55 × 925.78
  4. Step 4: Simplify right side
    1,747.12x = 2,425,127.00
  5. Step 5: Solve for x
    x = 2,425,127.00/1,747.12
  6. Step 6: Final answer
    x = 1,388.07

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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.