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Finding the Fourth Proportional to 3,347.72, 5,019.75 and 1,398.45

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Solution

The fourth proportional to 3,347.72, 5,019.75 and 1,398.45 is: 2,096.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,347.72 : 5,019.75 = 1,398.45 : x
  2. Step 2: Convert to fraction form
    3,347.72/5,019.75 = 1,398.45/x
  3. Step 3: Cross multiply
    3,347.72x = 5,019.75 × 1,398.45
  4. Step 4: Simplify right side
    3,347.72x = 7,019,869.39
  5. Step 5: Solve for x
    x = 7,019,869.39/3,347.72
  6. Step 6: Final answer
    x = 2,096.91

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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.