Home / 1,246.08-1,868.70-424.15

Finding the Fourth Proportional to 1,246.08, 1,868.70 and 424.15

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Solution

The fourth proportional to 1,246.08, 1,868.70 and 424.15 is: 636.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,246.08 : 1,868.70 = 424.15 : x
  2. Step 2: Convert to fraction form
    1,246.08/1,868.70 = 424.15/x
  3. Step 3: Cross multiply
    1,246.08x = 1,868.70 × 424.15
  4. Step 4: Simplify right side
    1,246.08x = 792,609.11
  5. Step 5: Solve for x
    x = 792,609.11/1,246.08
  6. Step 6: Final answer
    x = 636.08

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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.