Home / 6,115.14-8,438.88-3,320.64

Finding the Fourth Proportional to 6,115.14, 8,438.88 and 3,320.64

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Solution

The fourth proportional to 6,115.14, 8,438.88 and 3,320.64 is: 4,582.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,115.14 : 8,438.88 = 3,320.64 : x
  2. Step 2: Convert to fraction form
    6,115.14/8,438.88 = 3,320.64/x
  3. Step 3: Cross multiply
    6,115.14x = 8,438.88 × 3,320.64
  4. Step 4: Simplify right side
    6,115.14x = 28,022,482.48
  5. Step 5: Solve for x
    x = 28,022,482.48/6,115.14
  6. Step 6: Final answer
    x = 4,582.48

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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.