Home / 1,026.60-1,540.80-702.21

Finding the Fourth Proportional to 1,026.60, 1,540.80 and 702.21

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Solution

The fourth proportional to 1,026.60, 1,540.80 and 702.21 is: 1,053.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,026.60 : 1,540.80 = 702.21 : x
  2. Step 2: Convert to fraction form
    1,026.60/1,540.80 = 702.21/x
  3. Step 3: Cross multiply
    1,026.60x = 1,540.80 × 702.21
  4. Step 4: Simplify right side
    1,026.60x = 1,081,965.17
  5. Step 5: Solve for x
    x = 1,081,965.17/1,026.60
  6. Step 6: Final answer
    x = 1,053.93

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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.