Home / 8,660.64-12,987.18-2,736.06

Finding the Fourth Proportional to 8,660.64, 12,987.18 and 2,736.06

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Solution

The fourth proportional to 8,660.64, 12,987.18 and 2,736.06 is: 4,102.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,660.64 : 12,987.18 = 2,736.06 : x
  2. Step 2: Convert to fraction form
    8,660.64/12,987.18 = 2,736.06/x
  3. Step 3: Cross multiply
    8,660.64x = 12,987.18 × 2,736.06
  4. Step 4: Simplify right side
    8,660.64x = 35,533,703.71
  5. Step 5: Solve for x
    x = 35,533,703.71/8,660.64
  6. Step 6: Final answer
    x = 4,102.90

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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.