Home / 3,157.45-4,737.39-1,209.20

Finding the Fourth Proportional to 3,157.45, 4,737.39 and 1,209.20

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Solution

The fourth proportional to 3,157.45, 4,737.39 and 1,209.20 is: 1,814.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,157.45 : 4,737.39 = 1,209.20 : x
  2. Step 2: Convert to fraction form
    3,157.45/4,737.39 = 1,209.20/x
  3. Step 3: Cross multiply
    3,157.45x = 4,737.39 × 1,209.20
  4. Step 4: Simplify right side
    3,157.45x = 5,728,423.77
  5. Step 5: Solve for x
    x = 5,728,423.77/3,157.45
  6. Step 6: Final answer
    x = 1,814.26

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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.