Home / 4,754.64-7,131.98-2,121.47

Finding the Fourth Proportional to 4,754.64, 7,131.98 and 2,121.47

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Solution

The fourth proportional to 4,754.64, 7,131.98 and 2,121.47 is: 3,182.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,754.64 : 7,131.98 = 2,121.47 : x
  2. Step 2: Convert to fraction form
    4,754.64/7,131.98 = 2,121.47/x
  3. Step 3: Cross multiply
    4,754.64x = 7,131.98 × 2,121.47
  4. Step 4: Simplify right side
    4,754.64x = 15,130,281.61
  5. Step 5: Solve for x
    x = 15,130,281.61/4,754.64
  6. Step 6: Final answer
    x = 3,182.21

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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.