Home / 2,154.80-2,972.76-1,270.28

Finding the Fourth Proportional to 2,154.80, 2,972.76 and 1,270.28

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Solution

The fourth proportional to 2,154.80, 2,972.76 and 1,270.28 is: 1,752.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,154.80 : 2,972.76 = 1,270.28 : x
  2. Step 2: Convert to fraction form
    2,154.80/2,972.76 = 1,270.28/x
  3. Step 3: Cross multiply
    2,154.80x = 2,972.76 × 1,270.28
  4. Step 4: Simplify right side
    2,154.80x = 3,776,237.57
  5. Step 5: Solve for x
    x = 3,776,237.57/2,154.80
  6. Step 6: Final answer
    x = 1,752.48

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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.