Home / 8,972.85-12,399.60-6,730.83

Finding the Fourth Proportional to 8,972.85, 12,399.60 and 6,730.83

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Solution

The fourth proportional to 8,972.85, 12,399.60 and 6,730.83 is: 9,301.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,972.85 : 12,399.60 = 6,730.83 : x
  2. Step 2: Convert to fraction form
    8,972.85/12,399.60 = 6,730.83/x
  3. Step 3: Cross multiply
    8,972.85x = 12,399.60 × 6,730.83
  4. Step 4: Simplify right side
    8,972.85x = 83,459,624.91
  5. Step 5: Solve for x
    x = 83,459,624.91/8,972.85
  6. Step 6: Final answer
    x = 9,301.35

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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.