Home / 2,154.28-2,972.56-1,269.76

Finding the Fourth Proportional to 2,154.28, 2,972.56 and 1,269.76

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Solution

The fourth proportional to 2,154.28, 2,972.56 and 1,269.76 is: 1,752.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,154.28 : 2,972.56 = 1,269.76 : x
  2. Step 2: Convert to fraction form
    2,154.28/2,972.56 = 1,269.76/x
  3. Step 3: Cross multiply
    2,154.28x = 2,972.56 × 1,269.76
  4. Step 4: Simplify right side
    2,154.28x = 3,774,437.79
  5. Step 5: Solve for x
    x = 3,774,437.79/2,154.28
  6. Step 6: Final answer
    x = 1,752.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.