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Finding the Fourth Proportional to 2,115.84, 3,173.66 and 555.81

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Solution

The fourth proportional to 2,115.84, 3,173.66 and 555.81 is: 833.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,115.84 : 3,173.66 = 555.81 : x
  2. Step 2: Convert to fraction form
    2,115.84/3,173.66 = 555.81/x
  3. Step 3: Cross multiply
    2,115.84x = 3,173.66 × 555.81
  4. Step 4: Simplify right side
    2,115.84x = 1,763,951.96
  5. Step 5: Solve for x
    x = 1,763,951.96/2,115.84
  6. Step 6: Final answer
    x = 833.69

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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.