Home / 8,990.36-13,491.60-3,147.02

Finding the Fourth Proportional to 8,990.36, 13,491.60 and 3,147.02

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Solution

The fourth proportional to 8,990.36, 13,491.60 and 3,147.02 is: 4,722.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,990.36 : 13,491.60 = 3,147.02 : x
  2. Step 2: Convert to fraction form
    8,990.36/13,491.60 = 3,147.02/x
  3. Step 3: Cross multiply
    8,990.36x = 13,491.60 × 3,147.02
  4. Step 4: Simplify right side
    8,990.36x = 42,458,267.57
  5. Step 5: Solve for x
    x = 42,458,267.57/8,990.36
  6. Step 6: Final answer
    x = 4,722.65

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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.