Home / 1,261.65-1,741.05-702.11

Finding the Fourth Proportional to 1,261.65, 1,741.05 and 702.11

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Solution

The fourth proportional to 1,261.65, 1,741.05 and 702.11 is: 968.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261.65 : 1,741.05 = 702.11 : x
  2. Step 2: Convert to fraction form
    1,261.65/1,741.05 = 702.11/x
  3. Step 3: Cross multiply
    1,261.65x = 1,741.05 × 702.11
  4. Step 4: Simplify right side
    1,261.65x = 1,222,408.62
  5. Step 5: Solve for x
    x = 1,222,408.62/1,261.65
  6. Step 6: Final answer
    x = 968.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.