Home / 1,772.20-2,655.10-1,445.80

Finding the Fourth Proportional to 1,772.20, 2,655.10 and 1,445.80

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Solution

The fourth proportional to 1,772.20, 2,655.10 and 1,445.80 is: 2,166.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,772.20 : 2,655.10 = 1,445.80 : x
  2. Step 2: Convert to fraction form
    1,772.20/2,655.10 = 1,445.80/x
  3. Step 3: Cross multiply
    1,772.20x = 2,655.10 × 1,445.80
  4. Step 4: Simplify right side
    1,772.20x = 3,838,743.58
  5. Step 5: Solve for x
    x = 3,838,743.58/1,772.20
  6. Step 6: Final answer
    x = 2,166.09

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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.