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Finding the Fourth Proportional to 5,859.20, 8,789.04 and 1,966.40

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Solution

The fourth proportional to 5,859.20, 8,789.04 and 1,966.40 is: 2,949.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,859.20 : 8,789.04 = 1,966.40 : x
  2. Step 2: Convert to fraction form
    5,859.20/8,789.04 = 1,966.40/x
  3. Step 3: Cross multiply
    5,859.20x = 8,789.04 × 1,966.40
  4. Step 4: Simplify right side
    5,859.20x = 17,282,768.26
  5. Step 5: Solve for x
    x = 17,282,768.26/5,859.20
  6. Step 6: Final answer
    x = 2,949.68

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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.