Home / 1,281.52-1,906.96-1,277.20

Finding the Fourth Proportional to 1,281.52, 1,906.96 and 1,277.20

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Solution

The fourth proportional to 1,281.52, 1,906.96 and 1,277.20 is: 1,900.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,281.52 : 1,906.96 = 1,277.20 : x
  2. Step 2: Convert to fraction form
    1,281.52/1,906.96 = 1,277.20/x
  3. Step 3: Cross multiply
    1,281.52x = 1,906.96 × 1,277.20
  4. Step 4: Simplify right side
    1,281.52x = 2,435,569.31
  5. Step 5: Solve for x
    x = 2,435,569.31/1,281.52
  6. Step 6: Final answer
    x = 1,900.53

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.