Home / 2,278.80-3,417.23-718.38

Finding the Fourth Proportional to 2,278.80, 3,417.23 and 718.38

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Solution

The fourth proportional to 2,278.80, 3,417.23 and 718.38 is: 1,077.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,278.80 : 3,417.23 = 718.38 : x
  2. Step 2: Convert to fraction form
    2,278.80/3,417.23 = 718.38/x
  3. Step 3: Cross multiply
    2,278.80x = 3,417.23 × 718.38
  4. Step 4: Simplify right side
    2,278.80x = 2,454,866.10
  5. Step 5: Solve for x
    x = 2,454,866.10/2,278.80
  6. Step 6: Final answer
    x = 1,077.26

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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.