Home / 2,991.15-4,124.79-2,542.50

Finding the Fourth Proportional to 2,991.15, 4,124.79 and 2,542.50

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Solution

The fourth proportional to 2,991.15, 4,124.79 and 2,542.50 is: 3,506.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,991.15 : 4,124.79 = 2,542.50 : x
  2. Step 2: Convert to fraction form
    2,991.15/4,124.79 = 2,542.50/x
  3. Step 3: Cross multiply
    2,991.15x = 4,124.79 × 2,542.50
  4. Step 4: Simplify right side
    2,991.15x = 10,487,278.58
  5. Step 5: Solve for x
    x = 10,487,278.58/2,991.15
  6. Step 6: Final answer
    x = 3,506.10

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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.