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Finding the Fourth Proportional to 2,211.59, 3,316.57 and 651.19

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Solution

The fourth proportional to 2,211.59, 3,316.57 and 651.19 is: 976.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,211.59 : 3,316.57 = 651.19 : x
  2. Step 2: Convert to fraction form
    2,211.59/3,316.57 = 651.19/x
  3. Step 3: Cross multiply
    2,211.59x = 3,316.57 × 651.19
  4. Step 4: Simplify right side
    2,211.59x = 2,159,717.22
  5. Step 5: Solve for x
    x = 2,159,717.22/2,211.59
  6. Step 6: Final answer
    x = 976.55

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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.