Home / 2,177.31-3,247.65-1,977.76

Finding the Fourth Proportional to 2,177.31, 3,247.65 and 1,977.76

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Solution

The fourth proportional to 2,177.31, 3,247.65 and 1,977.76 is: 2,950.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,177.31 : 3,247.65 = 1,977.76 : x
  2. Step 2: Convert to fraction form
    2,177.31/3,247.65 = 1,977.76/x
  3. Step 3: Cross multiply
    2,177.31x = 3,247.65 × 1,977.76
  4. Step 4: Simplify right side
    2,177.31x = 6,423,076.32
  5. Step 5: Solve for x
    x = 6,423,076.32/2,177.31
  6. Step 6: Final answer
    x = 2,950.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.