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Finding the Fourth Proportional to 1,942.13, 2,913.29 and 555.67

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Solution

The fourth proportional to 1,942.13, 2,913.29 and 555.67 is: 833.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,942.13 : 2,913.29 = 555.67 : x
  2. Step 2: Convert to fraction form
    1,942.13/2,913.29 = 555.67/x
  3. Step 3: Cross multiply
    1,942.13x = 2,913.29 × 555.67
  4. Step 4: Simplify right side
    1,942.13x = 1,618,827.85
  5. Step 5: Solve for x
    x = 1,618,827.85/1,942.13
  6. Step 6: Final answer
    x = 833.53

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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.