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Finding the Fourth Proportional to 7,987.66, 11,983.14 and 2,797.18

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Solution

The fourth proportional to 7,987.66, 11,983.14 and 2,797.18 is: 4,196.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,987.66 : 11,983.14 = 2,797.18 : x
  2. Step 2: Convert to fraction form
    7,987.66/11,983.14 = 2,797.18/x
  3. Step 3: Cross multiply
    7,987.66x = 11,983.14 × 2,797.18
  4. Step 4: Simplify right side
    7,987.66x = 33,518,999.55
  5. Step 5: Solve for x
    x = 33,518,999.55/7,987.66
  6. Step 6: Final answer
    x = 4,196.35

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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.