Home / 1,255.28-1,884.36-981.44

Finding the Fourth Proportional to 1,255.28, 1,884.36 and 981.44

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Solution

The fourth proportional to 1,255.28, 1,884.36 and 981.44 is: 1,473.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,255.28 : 1,884.36 = 981.44 : x
  2. Step 2: Convert to fraction form
    1,255.28/1,884.36 = 981.44/x
  3. Step 3: Cross multiply
    1,255.28x = 1,884.36 × 981.44
  4. Step 4: Simplify right side
    1,255.28x = 1,849,386.28
  5. Step 5: Solve for x
    x = 1,849,386.28/1,255.28
  6. Step 6: Final answer
    x = 1,473.29

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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.