Home / 1,115.20-1,528.96-1,095.44

Finding the Fourth Proportional to 1,115.20, 1,528.96 and 1,095.44

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Solution

The fourth proportional to 1,115.20, 1,528.96 and 1,095.44 is: 1,501.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,115.20 : 1,528.96 = 1,095.44 : x
  2. Step 2: Convert to fraction form
    1,115.20/1,528.96 = 1,095.44/x
  3. Step 3: Cross multiply
    1,115.20x = 1,528.96 × 1,095.44
  4. Step 4: Simplify right side
    1,115.20x = 1,674,878.47
  5. Step 5: Solve for x
    x = 1,674,878.47/1,115.20
  6. Step 6: Final answer
    x = 1,501.87

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.