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Finding the Fourth Proportional to 1,959.34, 2,939.19 and 572.67

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Solution

The fourth proportional to 1,959.34, 2,939.19 and 572.67 is: 859.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,959.34 : 2,939.19 = 572.67 : x
  2. Step 2: Convert to fraction form
    1,959.34/2,939.19 = 572.67/x
  3. Step 3: Cross multiply
    1,959.34x = 2,939.19 × 572.67
  4. Step 4: Simplify right side
    1,959.34x = 1,683,183.79
  5. Step 5: Solve for x
    x = 1,683,183.79/1,959.34
  6. Step 6: Final answer
    x = 859.06

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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.