Home / 7,210.41-10,815.75-2,828.04

Finding the Fourth Proportional to 7,210.41, 10,815.75 and 2,828.04

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Solution

The fourth proportional to 7,210.41, 10,815.75 and 2,828.04 is: 4,242.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,210.41 : 10,815.75 = 2,828.04 : x
  2. Step 2: Convert to fraction form
    7,210.41/10,815.75 = 2,828.04/x
  3. Step 3: Cross multiply
    7,210.41x = 10,815.75 × 2,828.04
  4. Step 4: Simplify right side
    7,210.41x = 30,587,373.63
  5. Step 5: Solve for x
    x = 30,587,373.63/7,210.41
  6. Step 6: Final answer
    x = 4,242.11

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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.