Home / 1,117.22-1,541.54-675.15

Finding the Fourth Proportional to 1,117.22, 1,541.54 and 675.15

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Solution

The fourth proportional to 1,117.22, 1,541.54 and 675.15 is: 931.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,117.22 : 1,541.54 = 675.15 : x
  2. Step 2: Convert to fraction form
    1,117.22/1,541.54 = 675.15/x
  3. Step 3: Cross multiply
    1,117.22x = 1,541.54 × 675.15
  4. Step 4: Simplify right side
    1,117.22x = 1,040,769.53
  5. Step 5: Solve for x
    x = 1,040,769.53/1,117.22
  6. Step 6: Final answer
    x = 931.57

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Half scale
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Double scale
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1.5x scale

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.