Home / 1,117.78-1,541.76-675.11

Finding the Fourth Proportional to 1,117.78, 1,541.76 and 675.11

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Solution

The fourth proportional to 1,117.78, 1,541.76 and 675.11 is: 931.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,117.78 : 1,541.76 = 675.11 : x
  2. Step 2: Convert to fraction form
    1,117.78/1,541.76 = 675.11/x
  3. Step 3: Cross multiply
    1,117.78x = 1,541.76 × 675.11
  4. Step 4: Simplify right side
    1,117.78x = 1,040,857.59
  5. Step 5: Solve for x
    x = 1,040,857.59/1,117.78
  6. Step 6: Final answer
    x = 931.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.