Home / 3,178.53-4,385.61-1,851.48

Finding the Fourth Proportional to 3,178.53, 4,385.61 and 1,851.48

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Solution

The fourth proportional to 3,178.53, 4,385.61 and 1,851.48 is: 2,554.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178.53 : 4,385.61 = 1,851.48 : x
  2. Step 2: Convert to fraction form
    3,178.53/4,385.61 = 1,851.48/x
  3. Step 3: Cross multiply
    3,178.53x = 4,385.61 × 1,851.48
  4. Step 4: Simplify right side
    3,178.53x = 8,119,869.20
  5. Step 5: Solve for x
    x = 8,119,869.20/3,178.53
  6. Step 6: Final answer
    x = 2,554.60

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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.