Home / 9,128.54-13,693.28-2,889.21

Finding the Fourth Proportional to 9,128.54, 13,693.28 and 2,889.21

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Solution

The fourth proportional to 9,128.54, 13,693.28 and 2,889.21 is: 4,333.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,128.54 : 13,693.28 = 2,889.21 : x
  2. Step 2: Convert to fraction form
    9,128.54/13,693.28 = 2,889.21/x
  3. Step 3: Cross multiply
    9,128.54x = 13,693.28 × 2,889.21
  4. Step 4: Simplify right side
    9,128.54x = 39,562,717.38
  5. Step 5: Solve for x
    x = 39,562,717.38/9,128.54
  6. Step 6: Final answer
    x = 4,333.96

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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.