Home / 4,721.20-7,080.30-1,718.86

Finding the Fourth Proportional to 4,721.20, 7,080.30 and 1,718.86

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Solution

The fourth proportional to 4,721.20, 7,080.30 and 1,718.86 is: 2,577.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,721.20 : 7,080.30 = 1,718.86 : x
  2. Step 2: Convert to fraction form
    4,721.20/7,080.30 = 1,718.86/x
  3. Step 3: Cross multiply
    4,721.20x = 7,080.30 × 1,718.86
  4. Step 4: Simplify right side
    4,721.20x = 12,170,044.46
  5. Step 5: Solve for x
    x = 12,170,044.46/4,721.20
  6. Step 6: Final answer
    x = 2,577.74

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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.