Home / 3,178.87-4,385.35-1,851.77

Finding the Fourth Proportional to 3,178.87, 4,385.35 and 1,851.77

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Solution

The fourth proportional to 3,178.87, 4,385.35 and 1,851.77 is: 2,554.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178.87 : 4,385.35 = 1,851.77 : x
  2. Step 2: Convert to fraction form
    3,178.87/4,385.35 = 1,851.77/x
  3. Step 3: Cross multiply
    3,178.87x = 4,385.35 × 1,851.77
  4. Step 4: Simplify right side
    3,178.87x = 8,120,659.57
  5. Step 5: Solve for x
    x = 8,120,659.57/3,178.87
  6. Step 6: Final answer
    x = 2,554.57

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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.