Home / 3,178.28-4,385.63-1,851.66

Finding the Fourth Proportional to 3,178.28, 4,385.63 and 1,851.66

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Solution

The fourth proportional to 3,178.28, 4,385.63 and 1,851.66 is: 2,555.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178.28 : 4,385.63 = 1,851.66 : x
  2. Step 2: Convert to fraction form
    3,178.28/4,385.63 = 1,851.66/x
  3. Step 3: Cross multiply
    3,178.28x = 4,385.63 × 1,851.66
  4. Step 4: Simplify right side
    3,178.28x = 8,120,695.65
  5. Step 5: Solve for x
    x = 8,120,695.65/3,178.28
  6. Step 6: Final answer
    x = 2,555.06

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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.