Home / 4,754.69-7,131.90-2,121.51

Finding the Fourth Proportional to 4,754.69, 7,131.90 and 2,121.51

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Solution

The fourth proportional to 4,754.69, 7,131.90 and 2,121.51 is: 3,182.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,754.69 : 7,131.90 = 2,121.51 : x
  2. Step 2: Convert to fraction form
    4,754.69/7,131.90 = 2,121.51/x
  3. Step 3: Cross multiply
    4,754.69x = 7,131.90 × 2,121.51
  4. Step 4: Simplify right side
    4,754.69x = 15,130,397.17
  5. Step 5: Solve for x
    x = 15,130,397.17/4,754.69
  6. Step 6: Final answer
    x = 3,182.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.