Home / 2,756.16-4,134.28-808.40

Finding the Fourth Proportional to 2,756.16, 4,134.28 and 808.40

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Solution

The fourth proportional to 2,756.16, 4,134.28 and 808.40 is: 1,212.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,756.16 : 4,134.28 = 808.40 : x
  2. Step 2: Convert to fraction form
    2,756.16/4,134.28 = 808.40/x
  3. Step 3: Cross multiply
    2,756.16x = 4,134.28 × 808.40
  4. Step 4: Simplify right side
    2,756.16x = 3,342,151.95
  5. Step 5: Solve for x
    x = 3,342,151.95/2,756.16
  6. Step 6: Final answer
    x = 1,212.61

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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.