Home / 7,987.64-11,981.50-3,826.68

Finding the Fourth Proportional to 7,987.64, 11,981.50 and 3,826.68

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Solution

The fourth proportional to 7,987.64, 11,981.50 and 3,826.68 is: 5,740.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,987.64 : 11,981.50 = 3,826.68 : x
  2. Step 2: Convert to fraction form
    7,987.64/11,981.50 = 3,826.68/x
  3. Step 3: Cross multiply
    7,987.64x = 11,981.50 × 3,826.68
  4. Step 4: Simplify right side
    7,987.64x = 45,849,366.42
  5. Step 5: Solve for x
    x = 45,849,366.42/7,987.64
  6. Step 6: Final answer
    x = 5,740.04

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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.