Home / 1,437.27-2,155.71-512.64

Finding the Fourth Proportional to 1,437.27, 2,155.71 and 512.64

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Solution

The fourth proportional to 1,437.27, 2,155.71 and 512.64 is: 768.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,437.27 : 2,155.71 = 512.64 : x
  2. Step 2: Convert to fraction form
    1,437.27/2,155.71 = 512.64/x
  3. Step 3: Cross multiply
    1,437.27x = 2,155.71 × 512.64
  4. Step 4: Simplify right side
    1,437.27x = 1,105,103.17
  5. Step 5: Solve for x
    x = 1,105,103.17/1,437.27
  6. Step 6: Final answer
    x = 768.89

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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.