Home / 7,821.32-11,715.66-4,691.40

Finding the Fourth Proportional to 7,821.32, 11,715.66 and 4,691.40

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Solution

The fourth proportional to 7,821.32, 11,715.66 and 4,691.40 is: 7,027.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,821.32 : 11,715.66 = 4,691.40 : x
  2. Step 2: Convert to fraction form
    7,821.32/11,715.66 = 4,691.40/x
  3. Step 3: Cross multiply
    7,821.32x = 11,715.66 × 4,691.40
  4. Step 4: Simplify right side
    7,821.32x = 54,962,847.32
  5. Step 5: Solve for x
    x = 54,962,847.32/7,821.32
  6. Step 6: Final answer
    x = 7,027.31

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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.