Home / 3,124.98-4,314.47-1,947.78

Finding the Fourth Proportional to 3,124.98, 4,314.47 and 1,947.78

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Solution

The fourth proportional to 3,124.98, 4,314.47 and 1,947.78 is: 2,689.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,124.98 : 4,314.47 = 1,947.78 : x
  2. Step 2: Convert to fraction form
    3,124.98/4,314.47 = 1,947.78/x
  3. Step 3: Cross multiply
    3,124.98x = 4,314.47 × 1,947.78
  4. Step 4: Simplify right side
    3,124.98x = 8,403,628.64
  5. Step 5: Solve for x
    x = 8,403,628.64/3,124.98
  6. Step 6: Final answer
    x = 2,689.18

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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.