Home / 1,515.18-2,090.98-852.06

Finding the Fourth Proportional to 1,515.18, 2,090.98 and 852.06

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Solution

The fourth proportional to 1,515.18, 2,090.98 and 852.06 is: 1,175.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,515.18 : 2,090.98 = 852.06 : x
  2. Step 2: Convert to fraction form
    1,515.18/2,090.98 = 852.06/x
  3. Step 3: Cross multiply
    1,515.18x = 2,090.98 × 852.06
  4. Step 4: Simplify right side
    1,515.18x = 1,781,631.03
  5. Step 5: Solve for x
    x = 1,781,631.03/1,515.18
  6. Step 6: Final answer
    x = 1,175.85

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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.