Home / 2,775.16-4,159.90-1,315.54

Finding the Fourth Proportional to 2,775.16, 4,159.90 and 1,315.54

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Solution

The fourth proportional to 2,775.16, 4,159.90 and 1,315.54 is: 1,971.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,775.16 : 4,159.90 = 1,315.54 : x
  2. Step 2: Convert to fraction form
    2,775.16/4,159.90 = 1,315.54/x
  3. Step 3: Cross multiply
    2,775.16x = 4,159.90 × 1,315.54
  4. Step 4: Simplify right side
    2,775.16x = 5,472,514.85
  5. Step 5: Solve for x
    x = 5,472,514.85/2,775.16
  6. Step 6: Final answer
    x = 1,971.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.