Home / 2,126.86-2,934.45-1,230.53

Finding the Fourth Proportional to 2,126.86, 2,934.45 and 1,230.53

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Solution

The fourth proportional to 2,126.86, 2,934.45 and 1,230.53 is: 1,697.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,126.86 : 2,934.45 = 1,230.53 : x
  2. Step 2: Convert to fraction form
    2,126.86/2,934.45 = 1,230.53/x
  3. Step 3: Cross multiply
    2,126.86x = 2,934.45 × 1,230.53
  4. Step 4: Simplify right side
    2,126.86x = 3,610,929.93
  5. Step 5: Solve for x
    x = 3,610,929.93/2,126.86
  6. Step 6: Final answer
    x = 1,697.78

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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.