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Finding the Fourth Proportional to 6,601.11, 9,901.85 and 1,920.93

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Solution

The fourth proportional to 6,601.11, 9,901.85 and 1,920.93 is: 2,881.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,601.11 : 9,901.85 = 1,920.93 : x
  2. Step 2: Convert to fraction form
    6,601.11/9,901.85 = 1,920.93/x
  3. Step 3: Cross multiply
    6,601.11x = 9,901.85 × 1,920.93
  4. Step 4: Simplify right side
    6,601.11x = 19,020,751.12
  5. Step 5: Solve for x
    x = 19,020,751.12/6,601.11
  6. Step 6: Final answer
    x = 2,881.45

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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.