Home / 4,290.87-6,432.60-1,660.22

Finding the Fourth Proportional to 4,290.87, 6,432.60 and 1,660.22

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Solution

The fourth proportional to 4,290.87, 6,432.60 and 1,660.22 is: 2,488.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,290.87 : 6,432.60 = 1,660.22 : x
  2. Step 2: Convert to fraction form
    4,290.87/6,432.60 = 1,660.22/x
  3. Step 3: Cross multiply
    4,290.87x = 6,432.60 × 1,660.22
  4. Step 4: Simplify right side
    4,290.87x = 10,679,499.01
  5. Step 5: Solve for x
    x = 10,679,499.01/4,290.87
  6. Step 6: Final answer
    x = 2,488.89

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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.