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Finding the Fourth Proportional to 1,772.80, 2,656.32 and 1,553.92

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Solution

The fourth proportional to 1,772.80, 2,656.32 and 1,553.92 is: 2,328.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,772.80 : 2,656.32 = 1,553.92 : x
  2. Step 2: Convert to fraction form
    1,772.80/2,656.32 = 1,553.92/x
  3. Step 3: Cross multiply
    1,772.80x = 2,656.32 × 1,553.92
  4. Step 4: Simplify right side
    1,772.80x = 4,127,708.77
  5. Step 5: Solve for x
    x = 4,127,708.77/1,772.80
  6. Step 6: Final answer
    x = 2,328.36

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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.