Home / 1,264.38-1,895.19-647.22

Finding the Fourth Proportional to 1,264.38, 1,895.19 and 647.22

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Solution

The fourth proportional to 1,264.38, 1,895.19 and 647.22 is: 970.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,264.38 : 1,895.19 = 647.22 : x
  2. Step 2: Convert to fraction form
    1,264.38/1,895.19 = 647.22/x
  3. Step 3: Cross multiply
    1,264.38x = 1,895.19 × 647.22
  4. Step 4: Simplify right side
    1,264.38x = 1,226,609.55
  5. Step 5: Solve for x
    x = 1,226,609.55/1,264.38
  6. Step 6: Final answer
    x = 970.13

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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.