Home / 3,715.74-5,127.49-2,122.57

Finding the Fourth Proportional to 3,715.74, 5,127.49 and 2,122.57

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Solution

The fourth proportional to 3,715.74, 5,127.49 and 2,122.57 is: 2,929.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,715.74 : 5,127.49 = 2,122.57 : x
  2. Step 2: Convert to fraction form
    3,715.74/5,127.49 = 2,122.57/x
  3. Step 3: Cross multiply
    3,715.74x = 5,127.49 × 2,122.57
  4. Step 4: Simplify right side
    3,715.74x = 10,883,456.45
  5. Step 5: Solve for x
    x = 10,883,456.45/3,715.74
  6. Step 6: Final answer
    x = 2,929.01

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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.