Home / 1,120.02-1,678.35-887.97

Finding the Fourth Proportional to 1,120.02, 1,678.35 and 887.97

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Solution

The fourth proportional to 1,120.02, 1,678.35 and 887.97 is: 1,330.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120.02 : 1,678.35 = 887.97 : x
  2. Step 2: Convert to fraction form
    1,120.02/1,678.35 = 887.97/x
  3. Step 3: Cross multiply
    1,120.02x = 1,678.35 × 887.97
  4. Step 4: Simplify right side
    1,120.02x = 1,490,324.45
  5. Step 5: Solve for x
    x = 1,490,324.45/1,120.02
  6. Step 6: Final answer
    x = 1,330.62

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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.