Home / 6,378.18-8,799.72-3,986.52

Finding the Fourth Proportional to 6,378.18, 8,799.72 and 3,986.52

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Solution

The fourth proportional to 6,378.18, 8,799.72 and 3,986.52 is: 5,500.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,378.18 : 8,799.72 = 3,986.52 : x
  2. Step 2: Convert to fraction form
    6,378.18/8,799.72 = 3,986.52/x
  3. Step 3: Cross multiply
    6,378.18x = 8,799.72 × 3,986.52
  4. Step 4: Simplify right side
    6,378.18x = 35,080,259.77
  5. Step 5: Solve for x
    x = 35,080,259.77/6,378.18
  6. Step 6: Final answer
    x = 5,500.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.