Home / 5,498.20-8,245.70-1,987.80

Finding the Fourth Proportional to 5,498.20, 8,245.70 and 1,987.80

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Solution

The fourth proportional to 5,498.20, 8,245.70 and 1,987.80 is: 2,981.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,498.20 : 8,245.70 = 1,987.80 : x
  2. Step 2: Convert to fraction form
    5,498.20/8,245.70 = 1,987.80/x
  3. Step 3: Cross multiply
    5,498.20x = 8,245.70 × 1,987.80
  4. Step 4: Simplify right side
    5,498.20x = 16,390,802.46
  5. Step 5: Solve for x
    x = 16,390,802.46/5,498.20
  6. Step 6: Final answer
    x = 2,981.12

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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.