Home / 3,124.67-4,686.90-1,275.23

Finding the Fourth Proportional to 3,124.67, 4,686.90 and 1,275.23

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Solution

The fourth proportional to 3,124.67, 4,686.90 and 1,275.23 is: 1,912.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,124.67 : 4,686.90 = 1,275.23 : x
  2. Step 2: Convert to fraction form
    3,124.67/4,686.90 = 1,275.23/x
  3. Step 3: Cross multiply
    3,124.67x = 4,686.90 × 1,275.23
  4. Step 4: Simplify right side
    3,124.67x = 5,976,875.49
  5. Step 5: Solve for x
    x = 5,976,875.49/3,124.67
  6. Step 6: Final answer
    x = 1,912.80

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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.