Home / 1,437.30-2,151.90-1,275.30

Finding the Fourth Proportional to 1,437.30, 2,151.90 and 1,275.30

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Solution

The fourth proportional to 1,437.30, 2,151.90 and 1,275.30 is: 1,909.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,437.30 : 2,151.90 = 1,275.30 : x
  2. Step 2: Convert to fraction form
    1,437.30/2,151.90 = 1,275.30/x
  3. Step 3: Cross multiply
    1,437.30x = 2,151.90 × 1,275.30
  4. Step 4: Simplify right side
    1,437.30x = 2,744,318.07
  5. Step 5: Solve for x
    x = 2,744,318.07/1,437.30
  6. Step 6: Final answer
    x = 1,909.36

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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.