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Finding the Fourth Proportional to 6,539.48, 9,809.10 and 2,643.80

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Solution

The fourth proportional to 6,539.48, 9,809.10 and 2,643.80 is: 3,965.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,539.48 : 9,809.10 = 2,643.80 : x
  2. Step 2: Convert to fraction form
    6,539.48/9,809.10 = 2,643.80/x
  3. Step 3: Cross multiply
    6,539.48x = 9,809.10 × 2,643.80
  4. Step 4: Simplify right side
    6,539.48x = 25,933,298.58
  5. Step 5: Solve for x
    x = 25,933,298.58/6,539.48
  6. Step 6: Final answer
    x = 3,965.65

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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.