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Finding the Fourth Proportional to 3,246.48, 4,869.81 and 906.51

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Solution

The fourth proportional to 3,246.48, 4,869.81 and 906.51 is: 1,359.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,246.48 : 4,869.81 = 906.51 : x
  2. Step 2: Convert to fraction form
    3,246.48/4,869.81 = 906.51/x
  3. Step 3: Cross multiply
    3,246.48x = 4,869.81 × 906.51
  4. Step 4: Simplify right side
    3,246.48x = 4,414,531.46
  5. Step 5: Solve for x
    x = 4,414,531.46/3,246.48
  6. Step 6: Final answer
    x = 1,359.79

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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.