Home / 3,718.65-5,131.40-2,124.98

Finding the Fourth Proportional to 3,718.65, 5,131.40 and 2,124.98

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Solution

The fourth proportional to 3,718.65, 5,131.40 and 2,124.98 is: 2,932.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,718.65 : 5,131.40 = 2,124.98 : x
  2. Step 2: Convert to fraction form
    3,718.65/5,131.40 = 2,124.98/x
  3. Step 3: Cross multiply
    3,718.65x = 5,131.40 × 2,124.98
  4. Step 4: Simplify right side
    3,718.65x = 10,904,102.03
  5. Step 5: Solve for x
    x = 10,904,102.03/3,718.65
  6. Step 6: Final answer
    x = 2,932.28

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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.