Home / 1,246.12-1,869.01-424.28

Finding the Fourth Proportional to 1,246.12, 1,869.01 and 424.28

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Solution

The fourth proportional to 1,246.12, 1,869.01 and 424.28 is: 636.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,246.12 : 1,869.01 = 424.28 : x
  2. Step 2: Convert to fraction form
    1,246.12/1,869.01 = 424.28/x
  3. Step 3: Cross multiply
    1,246.12x = 1,869.01 × 424.28
  4. Step 4: Simplify right side
    1,246.12x = 792,983.56
  5. Step 5: Solve for x
    x = 792,983.56/1,246.12
  6. Step 6: Final answer
    x = 636.36

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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.