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Finding the Fourth Proportional to 6,911.32, 9,538.08 and 3,927.16

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Solution

The fourth proportional to 6,911.32, 9,538.08 and 3,927.16 is: 5,419.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,911.32 : 9,538.08 = 3,927.16 : x
  2. Step 2: Convert to fraction form
    6,911.32/9,538.08 = 3,927.16/x
  3. Step 3: Cross multiply
    6,911.32x = 9,538.08 × 3,927.16
  4. Step 4: Simplify right side
    6,911.32x = 37,457,566.25
  5. Step 5: Solve for x
    x = 37,457,566.25/6,911.32
  6. Step 6: Final answer
    x = 5,419.74

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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.