Home / 9,160.62-12,639.56-5,180.87

Finding the Fourth Proportional to 9,160.62, 12,639.56 and 5,180.87

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Solution

The fourth proportional to 9,160.62, 12,639.56 and 5,180.87 is: 7,148.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,160.62 : 12,639.56 = 5,180.87 : x
  2. Step 2: Convert to fraction form
    9,160.62/12,639.56 = 5,180.87/x
  3. Step 3: Cross multiply
    9,160.62x = 12,639.56 × 5,180.87
  4. Step 4: Simplify right side
    9,160.62x = 65,483,828.12
  5. Step 5: Solve for x
    x = 65,483,828.12/9,160.62
  6. Step 6: Final answer
    x = 7,148.41

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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.