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Finding the Fourth Proportional to 1,672.33, 2,510.03 and 851.19

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Solution

The fourth proportional to 1,672.33, 2,510.03 and 851.19 is: 1,277.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,672.33 : 2,510.03 = 851.19 : x
  2. Step 2: Convert to fraction form
    1,672.33/2,510.03 = 851.19/x
  3. Step 3: Cross multiply
    1,672.33x = 2,510.03 × 851.19
  4. Step 4: Simplify right side
    1,672.33x = 2,136,506.16
  5. Step 5: Solve for x
    x = 2,136,506.16/1,672.33
  6. Step 6: Final answer
    x = 1,277.57

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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.