Home / 3,177.79-4,385.15-1,867

Finding the Fourth Proportional to 3,177.79, 4,385.15 and 1,867

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Solution

The fourth proportional to 3,177.79, 4,385.15 and 1,867 is: 2,576.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,177.79 : 4,385.15 = 1,867 : x
  2. Step 2: Convert to fraction form
    3,177.79/4,385.15 = 1,867/x
  3. Step 3: Cross multiply
    3,177.79x = 4,385.15 × 1,867
  4. Step 4: Simplify right side
    3,177.79x = 8,187,075.05
  5. Step 5: Solve for x
    x = 8,187,075.05/3,177.79
  6. Step 6: Final answer
    x = 2,576.34

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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.