Home / 7,281.20-10,905.60-3,814.40

Finding the Fourth Proportional to 7,281.20, 10,905.60 and 3,814.40

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Solution

The fourth proportional to 7,281.20, 10,905.60 and 3,814.40 is: 5,713.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,281.20 : 10,905.60 = 3,814.40 : x
  2. Step 2: Convert to fraction form
    7,281.20/10,905.60 = 3,814.40/x
  3. Step 3: Cross multiply
    7,281.20x = 10,905.60 × 3,814.40
  4. Step 4: Simplify right side
    7,281.20x = 41,598,320.64
  5. Step 5: Solve for x
    x = 41,598,320.64/7,281.20
  6. Step 6: Final answer
    x = 5,713.11

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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.