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Finding the Fourth Proportional to 1,942.88, 2,913.82 and 556.22

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Solution

The fourth proportional to 1,942.88, 2,913.82 and 556.22 is: 834.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,942.88 : 2,913.82 = 556.22 : x
  2. Step 2: Convert to fraction form
    1,942.88/2,913.82 = 556.22/x
  3. Step 3: Cross multiply
    1,942.88x = 2,913.82 × 556.22
  4. Step 4: Simplify right side
    1,942.88x = 1,620,707.61
  5. Step 5: Solve for x
    x = 1,620,707.61/1,942.88
  6. Step 6: Final answer
    x = 834.18

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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.