Home / 1,246.23-1,868.81-424.29

Finding the Fourth Proportional to 1,246.23, 1,868.81 and 424.29

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Solution

The fourth proportional to 1,246.23, 1,868.81 and 424.29 is: 636.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,246.23 : 1,868.81 = 424.29 : x
  2. Step 2: Convert to fraction form
    1,246.23/1,868.81 = 424.29/x
  3. Step 3: Cross multiply
    1,246.23x = 1,868.81 × 424.29
  4. Step 4: Simplify right side
    1,246.23x = 792,905.93
  5. Step 5: Solve for x
    x = 792,905.93/1,246.23
  6. Step 6: Final answer
    x = 636.24

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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.