Home / 2,278.30-3,417.40-634.80

Finding the Fourth Proportional to 2,278.30, 3,417.40 and 634.80

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Solution

The fourth proportional to 2,278.30, 3,417.40 and 634.80 is: 952.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,278.30 : 3,417.40 = 634.80 : x
  2. Step 2: Convert to fraction form
    2,278.30/3,417.40 = 634.80/x
  3. Step 3: Cross multiply
    2,278.30x = 3,417.40 × 634.80
  4. Step 4: Simplify right side
    2,278.30x = 2,169,361.59
  5. Step 5: Solve for x
    x = 2,169,361.59/2,278.30
  6. Step 6: Final answer
    x = 952.19

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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.