Home / 7,281.78-10,904.85-3,387.30

Finding the Fourth Proportional to 7,281.78, 10,904.85 and 3,387.30

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Solution

The fourth proportional to 7,281.78, 10,904.85 and 3,387.30 is: 5,072.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,281.78 : 10,904.85 = 3,387.30 : x
  2. Step 2: Convert to fraction form
    7,281.78/10,904.85 = 3,387.30/x
  3. Step 3: Cross multiply
    7,281.78x = 10,904.85 × 3,387.30
  4. Step 4: Simplify right side
    7,281.78x = 36,937,998.41
  5. Step 5: Solve for x
    x = 36,937,998.41/7,281.78
  6. Step 6: Final answer
    x = 5,072.66

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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.