Home / 8,778.96-12,115.08-5,985.36

Finding the Fourth Proportional to 8,778.96, 12,115.08 and 5,985.36

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Solution

The fourth proportional to 8,778.96, 12,115.08 and 5,985.36 is: 8,259.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,778.96 : 12,115.08 = 5,985.36 : x
  2. Step 2: Convert to fraction form
    8,778.96/12,115.08 = 5,985.36/x
  3. Step 3: Cross multiply
    8,778.96x = 12,115.08 × 5,985.36
  4. Step 4: Simplify right side
    8,778.96x = 72,513,115.23
  5. Step 5: Solve for x
    x = 72,513,115.23/8,778.96
  6. Step 6: Final answer
    x = 8,259.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.