Home / 1,116.54-1,663.14-1,076.40

Finding the Fourth Proportional to 1,116.54, 1,663.14 and 1,076.40

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Solution

The fourth proportional to 1,116.54, 1,663.14 and 1,076.40 is: 1,603.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,116.54 : 1,663.14 = 1,076.40 : x
  2. Step 2: Convert to fraction form
    1,116.54/1,663.14 = 1,076.40/x
  3. Step 3: Cross multiply
    1,116.54x = 1,663.14 × 1,076.40
  4. Step 4: Simplify right side
    1,116.54x = 1,790,203.90
  5. Step 5: Solve for x
    x = 1,790,203.90/1,116.54
  6. Step 6: Final answer
    x = 1,603.35

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.