Home / 2,877.20-3,970.49-1,682.45

Finding the Fourth Proportional to 2,877.20, 3,970.49 and 1,682.45

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Solution

The fourth proportional to 2,877.20, 3,970.49 and 1,682.45 is: 2,321.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,877.20 : 3,970.49 = 1,682.45 : x
  2. Step 2: Convert to fraction form
    2,877.20/3,970.49 = 1,682.45/x
  3. Step 3: Cross multiply
    2,877.20x = 3,970.49 × 1,682.45
  4. Step 4: Simplify right side
    2,877.20x = 6,680,122.64
  5. Step 5: Solve for x
    x = 6,680,122.64/2,877.20
  6. Step 6: Final answer
    x = 2,321.75

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1.5x scale

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.