Home / 1,818.11-2,725.55-722.18

Finding the Fourth Proportional to 1,818.11, 2,725.55 and 722.18

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Solution

The fourth proportional to 1,818.11, 2,725.55 and 722.18 is: 1,082.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,818.11 : 2,725.55 = 722.18 : x
  2. Step 2: Convert to fraction form
    1,818.11/2,725.55 = 722.18/x
  3. Step 3: Cross multiply
    1,818.11x = 2,725.55 × 722.18
  4. Step 4: Simplify right side
    1,818.11x = 1,968,343.61
  5. Step 5: Solve for x
    x = 1,968,343.61/1,818.11
  6. Step 6: Final answer
    x = 1,082.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.