Home / 7,215.30-10,770.75-6,340.50

Finding the Fourth Proportional to 7,215.30, 10,770.75 and 6,340.50

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Solution

The fourth proportional to 7,215.30, 10,770.75 and 6,340.50 is: 9,464.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,215.30 : 10,770.75 = 6,340.50 : x
  2. Step 2: Convert to fraction form
    7,215.30/10,770.75 = 6,340.50/x
  3. Step 3: Cross multiply
    7,215.30x = 10,770.75 × 6,340.50
  4. Step 4: Simplify right side
    7,215.30x = 68,291,940.38
  5. Step 5: Solve for x
    x = 68,291,940.38/7,215.30
  6. Step 6: Final answer
    x = 9,464.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.