Home / 3,715.24-5,126.80-2,122.07

Finding the Fourth Proportional to 3,715.24, 5,126.80 and 2,122.07

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Solution

The fourth proportional to 3,715.24, 5,126.80 and 2,122.07 is: 2,928.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,715.24 : 5,126.80 = 2,122.07 : x
  2. Step 2: Convert to fraction form
    3,715.24/5,126.80 = 2,122.07/x
  3. Step 3: Cross multiply
    3,715.24x = 5,126.80 × 2,122.07
  4. Step 4: Simplify right side
    3,715.24x = 10,879,428.48
  5. Step 5: Solve for x
    x = 10,879,428.48/3,715.24
  6. Step 6: Final answer
    x = 2,928.32

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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.