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Finding the Fourth Proportional to 3,246.77, 4,870.34 and 906.78

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Solution

The fourth proportional to 3,246.77, 4,870.34 and 906.78 is: 1,360.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,246.77 : 4,870.34 = 906.78 : x
  2. Step 2: Convert to fraction form
    3,246.77/4,870.34 = 906.78/x
  3. Step 3: Cross multiply
    3,246.77x = 4,870.34 × 906.78
  4. Step 4: Simplify right side
    3,246.77x = 4,416,326.91
  5. Step 5: Solve for x
    x = 4,416,326.91/3,246.77
  6. Step 6: Final answer
    x = 1,360.22

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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.