Home / 7,845.58-10,816.32-6,721.66

Finding the Fourth Proportional to 7,845.58, 10,816.32 and 6,721.66

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Solution

The fourth proportional to 7,845.58, 10,816.32 and 6,721.66 is: 9,266.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,845.58 : 10,816.32 = 6,721.66 : x
  2. Step 2: Convert to fraction form
    7,845.58/10,816.32 = 6,721.66/x
  3. Step 3: Cross multiply
    7,845.58x = 10,816.32 × 6,721.66
  4. Step 4: Simplify right side
    7,845.58x = 72,703,625.49
  5. Step 5: Solve for x
    x = 72,703,625.49/7,845.58
  6. Step 6: Final answer
    x = 9,266.83

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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.