Home / 5,518.49-8,278.92-1,820.59

Finding the Fourth Proportional to 5,518.49, 8,278.92 and 1,820.59

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Solution

The fourth proportional to 5,518.49, 8,278.92 and 1,820.59 is: 2,731.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,518.49 : 8,278.92 = 1,820.59 : x
  2. Step 2: Convert to fraction form
    5,518.49/8,278.92 = 1,820.59/x
  3. Step 3: Cross multiply
    5,518.49x = 8,278.92 × 1,820.59
  4. Step 4: Simplify right side
    5,518.49x = 15,072,518.96
  5. Step 5: Solve for x
    x = 15,072,518.96/5,518.49
  6. Step 6: Final answer
    x = 2,731.28

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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.