Home / 8,544.30-12,816.45-7,881.90

Finding the Fourth Proportional to 8,544.30, 12,816.45 and 7,881.90

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Solution

The fourth proportional to 8,544.30, 12,816.45 and 7,881.90 is: 11,822.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,544.30 : 12,816.45 = 7,881.90 : x
  2. Step 2: Convert to fraction form
    8,544.30/12,816.45 = 7,881.90/x
  3. Step 3: Cross multiply
    8,544.30x = 12,816.45 × 7,881.90
  4. Step 4: Simplify right side
    8,544.30x = 101,017,977.26
  5. Step 5: Solve for x
    x = 101,017,977.26/8,544.30
  6. Step 6: Final answer
    x = 11,822.85

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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.