Home / 4,161.60-6,243.84-1,388.40

Finding the Fourth Proportional to 4,161.60, 6,243.84 and 1,388.40

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Solution

The fourth proportional to 4,161.60, 6,243.84 and 1,388.40 is: 2,083.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,161.60 : 6,243.84 = 1,388.40 : x
  2. Step 2: Convert to fraction form
    4,161.60/6,243.84 = 1,388.40/x
  3. Step 3: Cross multiply
    4,161.60x = 6,243.84 × 1,388.40
  4. Step 4: Simplify right side
    4,161.60x = 8,668,947.46
  5. Step 5: Solve for x
    x = 8,668,947.46/4,161.60
  6. Step 6: Final answer
    x = 2,083.08

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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.