Home / 3,156.90-4,352.13-1,977.18

Finding the Fourth Proportional to 3,156.90, 4,352.13 and 1,977.18

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Solution

The fourth proportional to 3,156.90, 4,352.13 and 1,977.18 is: 2,725.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,156.90 : 4,352.13 = 1,977.18 : x
  2. Step 2: Convert to fraction form
    3,156.90/4,352.13 = 1,977.18/x
  3. Step 3: Cross multiply
    3,156.90x = 4,352.13 × 1,977.18
  4. Step 4: Simplify right side
    3,156.90x = 8,604,944.39
  5. Step 5: Solve for x
    x = 8,604,944.39/3,156.90
  6. Step 6: Final answer
    x = 2,725.76

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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.