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Finding the Fourth Proportional to 6,601.68, 9,111.01 and 4,211.71

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Solution

The fourth proportional to 6,601.68, 9,111.01 and 4,211.71 is: 5,812.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,601.68 : 9,111.01 = 4,211.71 : x
  2. Step 2: Convert to fraction form
    6,601.68/9,111.01 = 4,211.71/x
  3. Step 3: Cross multiply
    6,601.68x = 9,111.01 × 4,211.71
  4. Step 4: Simplify right side
    6,601.68x = 38,372,931.93
  5. Step 5: Solve for x
    x = 38,372,931.93/6,601.68
  6. Step 6: Final answer
    x = 5,812.60

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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.