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Finding the Fourth Proportional to 6,631.86, 9,886.79 and 6,320.82

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Solution

The fourth proportional to 6,631.86, 9,886.79 and 6,320.82 is: 9,423.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,631.86 : 9,886.79 = 6,320.82 : x
  2. Step 2: Convert to fraction form
    6,631.86/9,886.79 = 6,320.82/x
  3. Step 3: Cross multiply
    6,631.86x = 9,886.79 × 6,320.82
  4. Step 4: Simplify right side
    6,631.86x = 62,492,619.97
  5. Step 5: Solve for x
    x = 62,492,619.97/6,631.86
  6. Step 6: Final answer
    x = 9,423.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.