Home / 1,427.76-2,140.56-1,304.64

Finding the Fourth Proportional to 1,427.76, 2,140.56 and 1,304.64

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Solution

The fourth proportional to 1,427.76, 2,140.56 and 1,304.64 is: 1,955.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,427.76 : 2,140.56 = 1,304.64 : x
  2. Step 2: Convert to fraction form
    1,427.76/2,140.56 = 1,304.64/x
  3. Step 3: Cross multiply
    1,427.76x = 2,140.56 × 1,304.64
  4. Step 4: Simplify right side
    1,427.76x = 2,792,660.20
  5. Step 5: Solve for x
    x = 2,792,660.20/1,427.76
  6. Step 6: Final answer
    x = 1,955.97

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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.