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Finding the Fourth Proportional to 7,859.68, 11,789.88 and 2,595.15

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Solution

The fourth proportional to 7,859.68, 11,789.88 and 2,595.15 is: 3,892.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,859.68 : 11,789.88 = 2,595.15 : x
  2. Step 2: Convert to fraction form
    7,859.68/11,789.88 = 2,595.15/x
  3. Step 3: Cross multiply
    7,859.68x = 11,789.88 × 2,595.15
  4. Step 4: Simplify right side
    7,859.68x = 30,596,507.08
  5. Step 5: Solve for x
    x = 30,596,507.08/7,859.68
  6. Step 6: Final answer
    x = 3,892.84

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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.