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Finding the Fourth Proportional to 3,943.34, 5,915.14 and 1,345.94

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Solution

The fourth proportional to 3,943.34, 5,915.14 and 1,345.94 is: 2,018.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,943.34 : 5,915.14 = 1,345.94 : x
  2. Step 2: Convert to fraction form
    3,943.34/5,915.14 = 1,345.94/x
  3. Step 3: Cross multiply
    3,943.34x = 5,915.14 × 1,345.94
  4. Step 4: Simplify right side
    3,943.34x = 7,961,423.53
  5. Step 5: Solve for x
    x = 7,961,423.53/3,943.34
  6. Step 6: Final answer
    x = 2,018.95

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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.