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Finding the Fourth Proportional to 6,911.50, 9,538.28 and 3,927.46

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Solution

The fourth proportional to 6,911.50, 9,538.28 and 3,927.46 is: 5,420.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,911.50 : 9,538.28 = 3,927.46 : x
  2. Step 2: Convert to fraction form
    6,911.50/9,538.28 = 3,927.46/x
  3. Step 3: Cross multiply
    6,911.50x = 9,538.28 × 3,927.46
  4. Step 4: Simplify right side
    6,911.50x = 37,461,213.17
  5. Step 5: Solve for x
    x = 37,461,213.17/6,911.50
  6. Step 6: Final answer
    x = 5,420.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.