Home / 3,125.23-4,312.11-1,866.70

Finding the Fourth Proportional to 3,125.23, 4,312.11 and 1,866.70

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Solution

The fourth proportional to 3,125.23, 4,312.11 and 1,866.70 is: 2,575.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,125.23 : 4,312.11 = 1,866.70 : x
  2. Step 2: Convert to fraction form
    3,125.23/4,312.11 = 1,866.70/x
  3. Step 3: Cross multiply
    3,125.23x = 4,312.11 × 1,866.70
  4. Step 4: Simplify right side
    3,125.23x = 8,049,398.62
  5. Step 5: Solve for x
    x = 8,049,398.62/3,125.23
  6. Step 6: Final answer
    x = 2,575.62

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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.