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Finding the Fourth Proportional to 6,875.01, 9,487.71 and 3,890.76

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Solution

The fourth proportional to 6,875.01, 9,487.71 and 3,890.76 is: 5,369.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,875.01 : 9,487.71 = 3,890.76 : x
  2. Step 2: Convert to fraction form
    6,875.01/9,487.71 = 3,890.76/x
  3. Step 3: Cross multiply
    6,875.01x = 9,487.71 × 3,890.76
  4. Step 4: Simplify right side
    6,875.01x = 36,914,402.56
  5. Step 5: Solve for x
    x = 36,914,402.56/6,875.01
  6. Step 6: Final answer
    x = 5,369.36

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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.