Home / 8,972.88-12,399.66-6,730.87

Finding the Fourth Proportional to 8,972.88, 12,399.66 and 6,730.87

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Solution

The fourth proportional to 8,972.88, 12,399.66 and 6,730.87 is: 9,301.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,972.88 : 12,399.66 = 6,730.87 : x
  2. Step 2: Convert to fraction form
    8,972.88/12,399.66 = 6,730.87/x
  3. Step 3: Cross multiply
    8,972.88x = 12,399.66 × 6,730.87
  4. Step 4: Simplify right side
    8,972.88x = 83,460,499.50
  5. Step 5: Solve for x
    x = 83,460,499.50/8,972.88
  6. Step 6: Final answer
    x = 9,301.42

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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.