Home / 5,564.28-7,688.94-3,989.88

Finding the Fourth Proportional to 5,564.28, 7,688.94 and 3,989.88

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Solution

The fourth proportional to 5,564.28, 7,688.94 and 3,989.88 is: 5,513.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,564.28 : 7,688.94 = 3,989.88 : x
  2. Step 2: Convert to fraction form
    5,564.28/7,688.94 = 3,989.88/x
  3. Step 3: Cross multiply
    5,564.28x = 7,688.94 × 3,989.88
  4. Step 4: Simplify right side
    5,564.28x = 30,677,947.93
  5. Step 5: Solve for x
    x = 30,677,947.93/5,564.28
  6. Step 6: Final answer
    x = 5,513.37

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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.