Home / 7,210.40-10,813.80-2,767.10

Finding the Fourth Proportional to 7,210.40, 10,813.80 and 2,767.10

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Solution

The fourth proportional to 7,210.40, 10,813.80 and 2,767.10 is: 4,149.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,210.40 : 10,813.80 = 2,767.10 : x
  2. Step 2: Convert to fraction form
    7,210.40/10,813.80 = 2,767.10/x
  3. Step 3: Cross multiply
    7,210.40x = 10,813.80 × 2,767.10
  4. Step 4: Simplify right side
    7,210.40x = 29,922,865.98
  5. Step 5: Solve for x
    x = 29,922,865.98/7,210.40
  6. Step 6: Final answer
    x = 4,149.96

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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.