Home / 8,439.60-12,659.40-6,799.35

Finding the Fourth Proportional to 8,439.60, 12,659.40 and 6,799.35

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Solution

The fourth proportional to 8,439.60, 12,659.40 and 6,799.35 is: 10,199.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,439.60 : 12,659.40 = 6,799.35 : x
  2. Step 2: Convert to fraction form
    8,439.60/12,659.40 = 6,799.35/x
  3. Step 3: Cross multiply
    8,439.60x = 12,659.40 × 6,799.35
  4. Step 4: Simplify right side
    8,439.60x = 86,075,691.39
  5. Step 5: Solve for x
    x = 86,075,691.39/8,439.60
  6. Step 6: Final answer
    x = 10,199.03

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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.