Home / 1,427.76-2,138.28-695.04

Finding the Fourth Proportional to 1,427.76, 2,138.28 and 695.04

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Solution

The fourth proportional to 1,427.76, 2,138.28 and 695.04 is: 1,040.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,427.76 : 2,138.28 = 695.04 : x
  2. Step 2: Convert to fraction form
    1,427.76/2,138.28 = 695.04/x
  3. Step 3: Cross multiply
    1,427.76x = 2,138.28 × 695.04
  4. Step 4: Simplify right side
    1,427.76x = 1,486,190.13
  5. Step 5: Solve for x
    x = 1,486,190.13/1,427.76
  6. Step 6: Final answer
    x = 1,040.92

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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.