Home / 4,258.82-6,390.65-1,661.15

Finding the Fourth Proportional to 4,258.82, 6,390.65 and 1,661.15

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Solution

The fourth proportional to 4,258.82, 6,390.65 and 1,661.15 is: 2,492.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,258.82 : 6,390.65 = 1,661.15 : x
  2. Step 2: Convert to fraction form
    4,258.82/6,390.65 = 1,661.15/x
  3. Step 3: Cross multiply
    4,258.82x = 6,390.65 × 1,661.15
  4. Step 4: Simplify right side
    4,258.82x = 10,615,800.45
  5. Step 5: Solve for x
    x = 10,615,800.45/4,258.82
  6. Step 6: Final answer
    x = 2,492.67

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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.