Home / 8,991.18-12,400.83-6,160.23

Finding the Fourth Proportional to 8,991.18, 12,400.83 and 6,160.23

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Solution

The fourth proportional to 8,991.18, 12,400.83 and 6,160.23 is: 8,496.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,991.18 : 12,400.83 = 6,160.23 : x
  2. Step 2: Convert to fraction form
    8,991.18/12,400.83 = 6,160.23/x
  3. Step 3: Cross multiply
    8,991.18x = 12,400.83 × 6,160.23
  4. Step 4: Simplify right side
    8,991.18x = 76,391,964.99
  5. Step 5: Solve for x
    x = 76,391,964.99/8,991.18
  6. Step 6: Final answer
    x = 8,496.32

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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.