Home / 1,256.19-1,884.15-981.60

Finding the Fourth Proportional to 1,256.19, 1,884.15 and 981.60

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Solution

The fourth proportional to 1,256.19, 1,884.15 and 981.60 is: 1,472.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,256.19 : 1,884.15 = 981.60 : x
  2. Step 2: Convert to fraction form
    1,256.19/1,884.15 = 981.60/x
  3. Step 3: Cross multiply
    1,256.19x = 1,884.15 × 981.60
  4. Step 4: Simplify right side
    1,256.19x = 1,849,481.64
  5. Step 5: Solve for x
    x = 1,849,481.64/1,256.19
  6. Step 6: Final answer
    x = 1,472.29

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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.