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Finding the Fourth Proportional to 3,386.72, 4,705.92 and 3,350.72

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Solution

The fourth proportional to 3,386.72, 4,705.92 and 3,350.72 is: 4,655.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,386.72 : 4,705.92 = 3,350.72 : x
  2. Step 2: Convert to fraction form
    3,386.72/4,705.92 = 3,350.72/x
  3. Step 3: Cross multiply
    3,386.72x = 4,705.92 × 3,350.72
  4. Step 4: Simplify right side
    3,386.72x = 15,768,220.26
  5. Step 5: Solve for x
    x = 15,768,220.26/3,386.72
  6. Step 6: Final answer
    x = 4,655.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.