Home / 8,378.64-12,518.55-8,087.85

Finding the Fourth Proportional to 8,378.64, 12,518.55 and 8,087.85

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Solution

The fourth proportional to 8,378.64, 12,518.55 and 8,087.85 is: 12,084.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,378.64 : 12,518.55 = 8,087.85 : x
  2. Step 2: Convert to fraction form
    8,378.64/12,518.55 = 8,087.85/x
  3. Step 3: Cross multiply
    8,378.64x = 12,518.55 × 8,087.85
  4. Step 4: Simplify right side
    8,378.64x = 101,248,154.62
  5. Step 5: Solve for x
    x = 101,248,154.62/8,378.64
  6. Step 6: Final answer
    x = 12,084.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.