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Finding the Fourth Proportional to 2,617.86, 3,927.66 and 1,156.74

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Solution

The fourth proportional to 2,617.86, 3,927.66 and 1,156.74 is: 1,735.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,617.86 : 3,927.66 = 1,156.74 : x
  2. Step 2: Convert to fraction form
    2,617.86/3,927.66 = 1,156.74/x
  3. Step 3: Cross multiply
    2,617.86x = 3,927.66 × 1,156.74
  4. Step 4: Simplify right side
    2,617.86x = 4,543,281.43
  5. Step 5: Solve for x
    x = 4,543,281.43/2,617.86
  6. Step 6: Final answer
    x = 1,735.49

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1.5x scale

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.