Home / 7,216.92-10,815.12-3,209.40

Finding the Fourth Proportional to 7,216.92, 10,815.12 and 3,209.40

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Solution

The fourth proportional to 7,216.92, 10,815.12 and 3,209.40 is: 4,809.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,216.92 : 10,815.12 = 3,209.40 : x
  2. Step 2: Convert to fraction form
    7,216.92/10,815.12 = 3,209.40/x
  3. Step 3: Cross multiply
    7,216.92x = 10,815.12 × 3,209.40
  4. Step 4: Simplify right side
    7,216.92x = 34,710,046.13
  5. Step 5: Solve for x
    x = 34,710,046.13/7,216.92
  6. Step 6: Final answer
    x = 4,809.54

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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.