Home / 4,258.90-6,387.80-1,661.50

Finding the Fourth Proportional to 4,258.90, 6,387.80 and 1,661.50

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Solution

The fourth proportional to 4,258.90, 6,387.80 and 1,661.50 is: 2,492.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,258.90 : 6,387.80 = 1,661.50 : x
  2. Step 2: Convert to fraction form
    4,258.90/6,387.80 = 1,661.50/x
  3. Step 3: Cross multiply
    4,258.90x = 6,387.80 × 1,661.50
  4. Step 4: Simplify right side
    4,258.90x = 10,613,329.70
  5. Step 5: Solve for x
    x = 10,613,329.70/4,258.90
  6. Step 6: Final answer
    x = 2,492.04

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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.