Home / 7,219.64-10,818.12-5,580.20

Finding the Fourth Proportional to 7,219.64, 10,818.12 and 5,580.20

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Solution

The fourth proportional to 7,219.64, 10,818.12 and 5,580.20 is: 8,361.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,219.64 : 10,818.12 = 5,580.20 : x
  2. Step 2: Convert to fraction form
    7,219.64/10,818.12 = 5,580.20/x
  3. Step 3: Cross multiply
    7,219.64x = 10,818.12 × 5,580.20
  4. Step 4: Simplify right side
    7,219.64x = 60,367,273.22
  5. Step 5: Solve for x
    x = 60,367,273.22/7,219.64
  6. Step 6: Final answer
    x = 8,361.54

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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.