Home / 2,988.24-4,124.22-2,151.71

Finding the Fourth Proportional to 2,988.24, 4,124.22 and 2,151.71

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Solution

The fourth proportional to 2,988.24, 4,124.22 and 2,151.71 is: 2,969.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,988.24 : 4,124.22 = 2,151.71 : x
  2. Step 2: Convert to fraction form
    2,988.24/4,124.22 = 2,151.71/x
  3. Step 3: Cross multiply
    2,988.24x = 4,124.22 × 2,151.71
  4. Step 4: Simplify right side
    2,988.24x = 8,874,135.39
  5. Step 5: Solve for x
    x = 8,874,135.39/2,988.24
  6. Step 6: Final answer
    x = 2,969.68

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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.