Home / 3,147.80-4,343.28-1,888.52

Finding the Fourth Proportional to 3,147.80, 4,343.28 and 1,888.52

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Solution

The fourth proportional to 3,147.80, 4,343.28 and 1,888.52 is: 2,605.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,147.80 : 4,343.28 = 1,888.52 : x
  2. Step 2: Convert to fraction form
    3,147.80/4,343.28 = 1,888.52/x
  3. Step 3: Cross multiply
    3,147.80x = 4,343.28 × 1,888.52
  4. Step 4: Simplify right side
    3,147.80x = 8,202,349.43
  5. Step 5: Solve for x
    x = 8,202,349.43/3,147.80
  6. Step 6: Final answer
    x = 2,605.74

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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.