Home / 3,123.10-4,685.86-2,867.95

Finding the Fourth Proportional to 3,123.10, 4,685.86 and 2,867.95

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Solution

The fourth proportional to 3,123.10, 4,685.86 and 2,867.95 is: 4,303.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,123.10 : 4,685.86 = 2,867.95 : x
  2. Step 2: Convert to fraction form
    3,123.10/4,685.86 = 2,867.95/x
  3. Step 3: Cross multiply
    3,123.10x = 4,685.86 × 2,867.95
  4. Step 4: Simplify right side
    3,123.10x = 13,438,788.76
  5. Step 5: Solve for x
    x = 13,438,788.76/3,123.10
  6. Step 6: Final answer
    x = 4,303.04

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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.