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Finding the Fourth Proportional to 6,888.34, 9,507.64 and 3,905.96

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Solution

The fourth proportional to 6,888.34, 9,507.64 and 3,905.96 is: 5,391.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,888.34 : 9,507.64 = 3,905.96 : x
  2. Step 2: Convert to fraction form
    6,888.34/9,507.64 = 3,905.96/x
  3. Step 3: Cross multiply
    6,888.34x = 9,507.64 × 3,905.96
  4. Step 4: Simplify right side
    6,888.34x = 37,136,404.23
  5. Step 5: Solve for x
    x = 37,136,404.23/6,888.34
  6. Step 6: Final answer
    x = 5,391.20

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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.