Home / 3,012.40-4,154.88-2,127.28

Finding the Fourth Proportional to 3,012.40, 4,154.88 and 2,127.28

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Solution

The fourth proportional to 3,012.40, 4,154.88 and 2,127.28 is: 2,934.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,012.40 : 4,154.88 = 2,127.28 : x
  2. Step 2: Convert to fraction form
    3,012.40/4,154.88 = 2,127.28/x
  3. Step 3: Cross multiply
    3,012.40x = 4,154.88 × 2,127.28
  4. Step 4: Simplify right side
    3,012.40x = 8,838,593.13
  5. Step 5: Solve for x
    x = 8,838,593.13/3,012.40
  6. Step 6: Final answer
    x = 2,934.07

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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.