Home / 1,515.26-2,090.88-852.18

Finding the Fourth Proportional to 1,515.26, 2,090.88 and 852.18

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Solution

The fourth proportional to 1,515.26, 2,090.88 and 852.18 is: 1,175.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,515.26 : 2,090.88 = 852.18 : x
  2. Step 2: Convert to fraction form
    1,515.26/2,090.88 = 852.18/x
  3. Step 3: Cross multiply
    1,515.26x = 2,090.88 × 852.18
  4. Step 4: Simplify right side
    1,515.26x = 1,781,806.12
  5. Step 5: Solve for x
    x = 1,781,806.12/1,515.26
  6. Step 6: Final answer
    x = 1,175.91

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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.