Home / 3,125.45-4,311.95-1,866.71

Finding the Fourth Proportional to 3,125.45, 4,311.95 and 1,866.71

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Solution

The fourth proportional to 3,125.45, 4,311.95 and 1,866.71 is: 2,575.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,125.45 : 4,311.95 = 1,866.71 : x
  2. Step 2: Convert to fraction form
    3,125.45/4,311.95 = 1,866.71/x
  3. Step 3: Cross multiply
    3,125.45x = 4,311.95 × 1,866.71
  4. Step 4: Simplify right side
    3,125.45x = 8,049,129.29
  5. Step 5: Solve for x
    x = 8,049,129.29/3,125.45
  6. Step 6: Final answer
    x = 2,575.35

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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.