Home / 2,772.22-4,159.86-1,129.92

Finding the Fourth Proportional to 2,772.22, 4,159.86 and 1,129.92

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Solution

The fourth proportional to 2,772.22, 4,159.86 and 1,129.92 is: 1,695.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,772.22 : 4,159.86 = 1,129.92 : x
  2. Step 2: Convert to fraction form
    2,772.22/4,159.86 = 1,129.92/x
  3. Step 3: Cross multiply
    2,772.22x = 4,159.86 × 1,129.92
  4. Step 4: Simplify right side
    2,772.22x = 4,700,309.01
  5. Step 5: Solve for x
    x = 4,700,309.01/2,772.22
  6. Step 6: Final answer
    x = 1,695.50

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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.