Home / 1,647.30-2,472.30-674.13

Finding the Fourth Proportional to 1,647.30, 2,472.30 and 674.13

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Solution

The fourth proportional to 1,647.30, 2,472.30 and 674.13 is: 1,011.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,647.30 : 2,472.30 = 674.13 : x
  2. Step 2: Convert to fraction form
    1,647.30/2,472.30 = 674.13/x
  3. Step 3: Cross multiply
    1,647.30x = 2,472.30 × 674.13
  4. Step 4: Simplify right side
    1,647.30x = 1,666,651.60
  5. Step 5: Solve for x
    x = 1,666,651.60/1,647.30
  6. Step 6: Final answer
    x = 1,011.75

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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.