Home / 8,958.20-12,362.46-4,979.36

Finding the Fourth Proportional to 8,958.20, 12,362.46 and 4,979.36

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Solution

The fourth proportional to 8,958.20, 12,362.46 and 4,979.36 is: 6,871.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,958.20 : 12,362.46 = 4,979.36 : x
  2. Step 2: Convert to fraction form
    8,958.20/12,362.46 = 4,979.36/x
  3. Step 3: Cross multiply
    8,958.20x = 12,362.46 × 4,979.36
  4. Step 4: Simplify right side
    8,958.20x = 61,557,138.83
  5. Step 5: Solve for x
    x = 61,557,138.83/8,958.20
  6. Step 6: Final answer
    x = 6,871.60

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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.