Home / 1,518.15-2,095.08-855.09

Finding the Fourth Proportional to 1,518.15, 2,095.08 and 855.09

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Solution

The fourth proportional to 1,518.15, 2,095.08 and 855.09 is: 1,180.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,518.15 : 2,095.08 = 855.09 : x
  2. Step 2: Convert to fraction form
    1,518.15/2,095.08 = 855.09/x
  3. Step 3: Cross multiply
    1,518.15x = 2,095.08 × 855.09
  4. Step 4: Simplify right side
    1,518.15x = 1,791,481.96
  5. Step 5: Solve for x
    x = 1,791,481.96/1,518.15
  6. Step 6: Final answer
    x = 1,180.04

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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.