Home / 3,903.80-5,854.93-2,148.20

Finding the Fourth Proportional to 3,903.80, 5,854.93 and 2,148.20

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Solution

The fourth proportional to 3,903.80, 5,854.93 and 2,148.20 is: 3,221.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,903.80 : 5,854.93 = 2,148.20 : x
  2. Step 2: Convert to fraction form
    3,903.80/5,854.93 = 2,148.20/x
  3. Step 3: Cross multiply
    3,903.80x = 5,854.93 × 2,148.20
  4. Step 4: Simplify right side
    3,903.80x = 12,577,543.55
  5. Step 5: Solve for x
    x = 12,577,543.55/3,903.80
  6. Step 6: Final answer
    x = 3,221.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.