Home / 8,979.12-13,470.96-2,823.12

Finding the Fourth Proportional to 8,979.12, 13,470.96 and 2,823.12

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Solution

The fourth proportional to 8,979.12, 13,470.96 and 2,823.12 is: 4,235.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,979.12 : 13,470.96 = 2,823.12 : x
  2. Step 2: Convert to fraction form
    8,979.12/13,470.96 = 2,823.12/x
  3. Step 3: Cross multiply
    8,979.12x = 13,470.96 × 2,823.12
  4. Step 4: Simplify right side
    8,979.12x = 38,030,136.60
  5. Step 5: Solve for x
    x = 38,030,136.60/8,979.12
  6. Step 6: Final answer
    x = 4,235.40

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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.