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Finding the Fourth Proportional to 3,438.47, 4,745.05 and 1,946.39

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Solution

The fourth proportional to 3,438.47, 4,745.05 and 1,946.39 is: 2,685.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,438.47 : 4,745.05 = 1,946.39 : x
  2. Step 2: Convert to fraction form
    3,438.47/4,745.05 = 1,946.39/x
  3. Step 3: Cross multiply
    3,438.47x = 4,745.05 × 1,946.39
  4. Step 4: Simplify right side
    3,438.47x = 9,235,689.28
  5. Step 5: Solve for x
    x = 9,235,689.28/3,438.47
  6. Step 6: Final answer
    x = 2,685.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.