Home / 2,877.36-3,970.92-2,177.52

Finding the Fourth Proportional to 2,877.36, 3,970.92 and 2,177.52

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Solution

The fourth proportional to 2,877.36, 3,970.92 and 2,177.52 is: 3,005.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,877.36 : 3,970.92 = 2,177.52 : x
  2. Step 2: Convert to fraction form
    2,877.36/3,970.92 = 2,177.52/x
  3. Step 3: Cross multiply
    2,877.36x = 3,970.92 × 2,177.52
  4. Step 4: Simplify right side
    2,877.36x = 8,646,757.72
  5. Step 5: Solve for x
    x = 8,646,757.72/2,877.36
  6. Step 6: Final answer
    x = 3,005.10

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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.