Home / 3,211.52-4,815.84-1,019.84

Finding the Fourth Proportional to 3,211.52, 4,815.84 and 1,019.84

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Solution

The fourth proportional to 3,211.52, 4,815.84 and 1,019.84 is: 1,529.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,211.52 : 4,815.84 = 1,019.84 : x
  2. Step 2: Convert to fraction form
    3,211.52/4,815.84 = 1,019.84/x
  3. Step 3: Cross multiply
    3,211.52x = 4,815.84 × 1,019.84
  4. Step 4: Simplify right side
    3,211.52x = 4,911,386.27
  5. Step 5: Solve for x
    x = 4,911,386.27/3,211.52
  6. Step 6: Final answer
    x = 1,529.30

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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.