Home / 2,688.52-4,033.40-1,127.64

Finding the Fourth Proportional to 2,688.52, 4,033.40 and 1,127.64

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Solution

The fourth proportional to 2,688.52, 4,033.40 and 1,127.64 is: 1,691.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,688.52 : 4,033.40 = 1,127.64 : x
  2. Step 2: Convert to fraction form
    2,688.52/4,033.40 = 1,127.64/x
  3. Step 3: Cross multiply
    2,688.52x = 4,033.40 × 1,127.64
  4. Step 4: Simplify right side
    2,688.52x = 4,548,223.18
  5. Step 5: Solve for x
    x = 4,548,223.18/2,688.52
  6. Step 6: Final answer
    x = 1,691.72

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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.