Home / 5,518.35-8,278.02-1,820.88

Finding the Fourth Proportional to 5,518.35, 8,278.02 and 1,820.88

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Solution

The fourth proportional to 5,518.35, 8,278.02 and 1,820.88 is: 2,731.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,518.35 : 8,278.02 = 1,820.88 : x
  2. Step 2: Convert to fraction form
    5,518.35/8,278.02 = 1,820.88/x
  3. Step 3: Cross multiply
    5,518.35x = 8,278.02 × 1,820.88
  4. Step 4: Simplify right side
    5,518.35x = 15,073,281.06
  5. Step 5: Solve for x
    x = 15,073,281.06/5,518.35
  6. Step 6: Final answer
    x = 2,731.48

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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.