Home / 5,819.31-8,728.98-2,121.53

Finding the Fourth Proportional to 5,819.31, 8,728.98 and 2,121.53

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Solution

The fourth proportional to 5,819.31, 8,728.98 and 2,121.53 is: 3,182.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,819.31 : 8,728.98 = 2,121.53 : x
  2. Step 2: Convert to fraction form
    5,819.31/8,728.98 = 2,121.53/x
  3. Step 3: Cross multiply
    5,819.31x = 8,728.98 × 2,121.53
  4. Step 4: Simplify right side
    5,819.31x = 18,518,826.92
  5. Step 5: Solve for x
    x = 18,518,826.92/5,819.31
  6. Step 6: Final answer
    x = 3,182.31

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1.5x scale

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.