Home / 3,715.28-5,127.24-2,122.19

Finding the Fourth Proportional to 3,715.28, 5,127.24 and 2,122.19

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Solution

The fourth proportional to 3,715.28, 5,127.24 and 2,122.19 is: 2,928.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,715.28 : 5,127.24 = 2,122.19 : x
  2. Step 2: Convert to fraction form
    3,715.28/5,127.24 = 2,122.19/x
  3. Step 3: Cross multiply
    3,715.28x = 5,127.24 × 2,122.19
  4. Step 4: Simplify right side
    3,715.28x = 10,880,966.84
  5. Step 5: Solve for x
    x = 10,880,966.84/3,715.28
  6. Step 6: Final answer
    x = 2,928.71

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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.