Home / 3,124.95-4,687.70-1,276.20

Finding the Fourth Proportional to 3,124.95, 4,687.70 and 1,276.20

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Solution

The fourth proportional to 3,124.95, 4,687.70 and 1,276.20 is: 1,914.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,124.95 : 4,687.70 = 1,276.20 : x
  2. Step 2: Convert to fraction form
    3,124.95/4,687.70 = 1,276.20/x
  3. Step 3: Cross multiply
    3,124.95x = 4,687.70 × 1,276.20
  4. Step 4: Simplify right side
    3,124.95x = 5,982,442.74
  5. Step 5: Solve for x
    x = 5,982,442.74/3,124.95
  6. Step 6: Final answer
    x = 1,914.41

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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.