Home / 1,116.22-1,541.08-718.06

Finding the Fourth Proportional to 1,116.22, 1,541.08 and 718.06

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Solution

The fourth proportional to 1,116.22, 1,541.08 and 718.06 is: 991.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,116.22 : 1,541.08 = 718.06 : x
  2. Step 2: Convert to fraction form
    1,116.22/1,541.08 = 718.06/x
  3. Step 3: Cross multiply
    1,116.22x = 1,541.08 × 718.06
  4. Step 4: Simplify right side
    1,116.22x = 1,106,587.90
  5. Step 5: Solve for x
    x = 1,106,587.90/1,116.22
  6. Step 6: Final answer
    x = 991.37

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Half 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.