Home / 1,117.22-1,541.78-613.12

Finding the Fourth Proportional to 1,117.22, 1,541.78 and 613.12

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Solution

The fourth proportional to 1,117.22, 1,541.78 and 613.12 is: 846.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,117.22 : 1,541.78 = 613.12 : x
  2. Step 2: Convert to fraction form
    1,117.22/1,541.78 = 613.12/x
  3. Step 3: Cross multiply
    1,117.22x = 1,541.78 × 613.12
  4. Step 4: Simplify right side
    1,117.22x = 945,288.44
  5. Step 5: Solve for x
    x = 945,288.44/1,117.22
  6. Step 6: Final answer
    x = 846.11

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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.