Home / 2,278.23-3,418.67-891.49

Finding the Fourth Proportional to 2,278.23, 3,418.67 and 891.49

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Solution

The fourth proportional to 2,278.23, 3,418.67 and 891.49 is: 1,337.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,278.23 : 3,418.67 = 891.49 : x
  2. Step 2: Convert to fraction form
    2,278.23/3,418.67 = 891.49/x
  3. Step 3: Cross multiply
    2,278.23x = 3,418.67 × 891.49
  4. Step 4: Simplify right side
    2,278.23x = 3,047,710.12
  5. Step 5: Solve for x
    x = 3,047,710.12/2,278.23
  6. Step 6: Final answer
    x = 1,337.75

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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.