Home / 3,211.48-4,816.50-1,913.32

Finding the Fourth Proportional to 3,211.48, 4,816.50 and 1,913.32

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Solution

The fourth proportional to 3,211.48, 4,816.50 and 1,913.32 is: 2,869.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,211.48 : 4,816.50 = 1,913.32 : x
  2. Step 2: Convert to fraction form
    3,211.48/4,816.50 = 1,913.32/x
  3. Step 3: Cross multiply
    3,211.48x = 4,816.50 × 1,913.32
  4. Step 4: Simplify right side
    3,211.48x = 9,215,505.78
  5. Step 5: Solve for x
    x = 9,215,505.78/3,211.48
  6. Step 6: Final answer
    x = 2,869.55

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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.