Home / 9,170.75-12,655.65-4,979

Finding the Fourth Proportional to 9,170.75, 12,655.65 and 4,979

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Solution

The fourth proportional to 9,170.75, 12,655.65 and 4,979 is: 6,871.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,170.75 : 12,655.65 = 4,979 : x
  2. Step 2: Convert to fraction form
    9,170.75/12,655.65 = 4,979/x
  3. Step 3: Cross multiply
    9,170.75x = 12,655.65 × 4,979
  4. Step 4: Simplify right side
    9,170.75x = 63,012,481.35
  5. Step 5: Solve for x
    x = 63,012,481.35/9,170.75
  6. Step 6: Final answer
    x = 6,871.03

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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.