Home / 9,138.28-13,706.40-2,564.72

Finding the Fourth Proportional to 9,138.28, 13,706.40 and 2,564.72

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Solution

The fourth proportional to 9,138.28, 13,706.40 and 2,564.72 is: 3,846.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,138.28 : 13,706.40 = 2,564.72 : x
  2. Step 2: Convert to fraction form
    9,138.28/13,706.40 = 2,564.72/x
  3. Step 3: Cross multiply
    9,138.28x = 13,706.40 × 2,564.72
  4. Step 4: Simplify right side
    9,138.28x = 35,153,078.21
  5. Step 5: Solve for x
    x = 35,153,078.21/9,138.28
  6. Step 6: Final answer
    x = 3,846.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.