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Finding the Fourth Proportional to 6,518.80, 9,781.08 and 2,630.80

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Solution

The fourth proportional to 6,518.80, 9,781.08 and 2,630.80 is: 3,947.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,518.80 : 9,781.08 = 2,630.80 : x
  2. Step 2: Convert to fraction form
    6,518.80/9,781.08 = 2,630.80/x
  3. Step 3: Cross multiply
    6,518.80x = 9,781.08 × 2,630.80
  4. Step 4: Simplify right side
    6,518.80x = 25,732,065.26
  5. Step 5: Solve for x
    x = 25,732,065.26/6,518.80
  6. Step 6: Final answer
    x = 3,947.36

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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.