Home / 2,278.28-3,417.30-739.16

Finding the Fourth Proportional to 2,278.28, 3,417.30 and 739.16

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Solution

The fourth proportional to 2,278.28, 3,417.30 and 739.16 is: 1,108.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,278.28 : 3,417.30 = 739.16 : x
  2. Step 2: Convert to fraction form
    2,278.28/3,417.30 = 739.16/x
  3. Step 3: Cross multiply
    2,278.28x = 3,417.30 × 739.16
  4. Step 4: Simplify right side
    2,278.28x = 2,525,931.47
  5. Step 5: Solve for x
    x = 2,525,931.47/2,278.28
  6. Step 6: Final answer
    x = 1,108.70

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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.