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Finding the Fourth Proportional to 1,802.76, 2,702.62 and 1,642.28

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Solution

The fourth proportional to 1,802.76, 2,702.62 and 1,642.28 is: 2,462.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,802.76 : 2,702.62 = 1,642.28 : x
  2. Step 2: Convert to fraction form
    1,802.76/2,702.62 = 1,642.28/x
  3. Step 3: Cross multiply
    1,802.76x = 2,702.62 × 1,642.28
  4. Step 4: Simplify right side
    1,802.76x = 4,438,458.77
  5. Step 5: Solve for x
    x = 4,438,458.77/1,802.76
  6. Step 6: Final answer
    x = 2,462.04

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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.