Home / 8,980.30-13,470.45-3,136.15

Finding the Fourth Proportional to 8,980.30, 13,470.45 and 3,136.15

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Solution

The fourth proportional to 8,980.30, 13,470.45 and 3,136.15 is: 4,704.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,980.30 : 13,470.45 = 3,136.15 : x
  2. Step 2: Convert to fraction form
    8,980.30/13,470.45 = 3,136.15/x
  3. Step 3: Cross multiply
    8,980.30x = 13,470.45 × 3,136.15
  4. Step 4: Simplify right side
    8,980.30x = 42,245,351.77
  5. Step 5: Solve for x
    x = 42,245,351.77/8,980.30
  6. Step 6: Final answer
    x = 4,704.23

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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.