Home / 1,515.31-2,091.13-852.29

Finding the Fourth Proportional to 1,515.31, 2,091.13 and 852.29

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Solution

The fourth proportional to 1,515.31, 2,091.13 and 852.29 is: 1,176.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,515.31 : 2,091.13 = 852.29 : x
  2. Step 2: Convert to fraction form
    1,515.31/2,091.13 = 852.29/x
  3. Step 3: Cross multiply
    1,515.31x = 2,091.13 × 852.29
  4. Step 4: Simplify right side
    1,515.31x = 1,782,244.72
  5. Step 5: Solve for x
    x = 1,782,244.72/1,515.31
  6. Step 6: Final answer
    x = 1,176.16

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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.