Home / 1,246.81-1,869.69-425.02

Finding the Fourth Proportional to 1,246.81, 1,869.69 and 425.02

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Solution

The fourth proportional to 1,246.81, 1,869.69 and 425.02 is: 637.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,246.81 : 1,869.69 = 425.02 : x
  2. Step 2: Convert to fraction form
    1,246.81/1,869.69 = 425.02/x
  3. Step 3: Cross multiply
    1,246.81x = 1,869.69 × 425.02
  4. Step 4: Simplify right side
    1,246.81x = 794,655.64
  5. Step 5: Solve for x
    x = 794,655.64/1,246.81
  6. Step 6: Final answer
    x = 637.35

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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.