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Finding the Fourth Proportional to 6,599.80, 9,896.80 and 1,981.72

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Solution

The fourth proportional to 6,599.80, 9,896.80 and 1,981.72 is: 2,971.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,599.80 : 9,896.80 = 1,981.72 : x
  2. Step 2: Convert to fraction form
    6,599.80/9,896.80 = 1,981.72/x
  3. Step 3: Cross multiply
    6,599.80x = 9,896.80 × 1,981.72
  4. Step 4: Simplify right side
    6,599.80x = 19,612,686.50
  5. Step 5: Solve for x
    x = 19,612,686.50/6,599.80
  6. Step 6: Final answer
    x = 2,971.71

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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.