Home / 4,721.68-7,077.64-2,126.44

Finding the Fourth Proportional to 4,721.68, 7,077.64 and 2,126.44

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Solution

The fourth proportional to 4,721.68, 7,077.64 and 2,126.44 is: 3,187.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,721.68 : 7,077.64 = 2,126.44 : x
  2. Step 2: Convert to fraction form
    4,721.68/7,077.64 = 2,126.44/x
  3. Step 3: Cross multiply
    4,721.68x = 7,077.64 × 2,126.44
  4. Step 4: Simplify right side
    4,721.68x = 15,050,176.80
  5. Step 5: Solve for x
    x = 15,050,176.80/4,721.68
  6. Step 6: Final answer
    x = 3,187.46

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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.