Home / 2,355.46-3,250.40-1,360.78

Finding the Fourth Proportional to 2,355.46, 3,250.40 and 1,360.78

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Solution

The fourth proportional to 2,355.46, 3,250.40 and 1,360.78 is: 1,877.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,355.46 : 3,250.40 = 1,360.78 : x
  2. Step 2: Convert to fraction form
    2,355.46/3,250.40 = 1,360.78/x
  3. Step 3: Cross multiply
    2,355.46x = 3,250.40 × 1,360.78
  4. Step 4: Simplify right side
    2,355.46x = 4,423,079.31
  5. Step 5: Solve for x
    x = 4,423,079.31/2,355.46
  6. Step 6: Final answer
    x = 1,877.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.