Home / 3,157.32-4,737.34-1,309.78

Finding the Fourth Proportional to 3,157.32, 4,737.34 and 1,309.78

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Solution

The fourth proportional to 3,157.32, 4,737.34 and 1,309.78 is: 1,965.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,157.32 : 4,737.34 = 1,309.78 : x
  2. Step 2: Convert to fraction form
    3,157.32/4,737.34 = 1,309.78/x
  3. Step 3: Cross multiply
    3,157.32x = 4,737.34 × 1,309.78
  4. Step 4: Simplify right side
    3,157.32x = 6,204,873.19
  5. Step 5: Solve for x
    x = 6,204,873.19/3,157.32
  6. Step 6: Final answer
    x = 1,965.23

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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.