Home / 7,147.60-9,867.88-5,257.68

Finding the Fourth Proportional to 7,147.60, 9,867.88 and 5,257.68

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Solution

The fourth proportional to 7,147.60, 9,867.88 and 5,257.68 is: 7,258.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,147.60 : 9,867.88 = 5,257.68 : x
  2. Step 2: Convert to fraction form
    7,147.60/9,867.88 = 5,257.68/x
  3. Step 3: Cross multiply
    7,147.60x = 9,867.88 × 5,257.68
  4. Step 4: Simplify right side
    7,147.60x = 51,882,155.32
  5. Step 5: Solve for x
    x = 51,882,155.32/7,147.60
  6. Step 6: Final answer
    x = 7,258.68

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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.