Home / 4,323.78-6,489.66-1,985.04

Finding the Fourth Proportional to 4,323.78, 6,489.66 and 1,985.04

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Solution

The fourth proportional to 4,323.78, 6,489.66 and 1,985.04 is: 2,979.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,323.78 : 6,489.66 = 1,985.04 : x
  2. Step 2: Convert to fraction form
    4,323.78/6,489.66 = 1,985.04/x
  3. Step 3: Cross multiply
    4,323.78x = 6,489.66 × 1,985.04
  4. Step 4: Simplify right side
    4,323.78x = 12,882,234.69
  5. Step 5: Solve for x
    x = 12,882,234.69/4,323.78
  6. Step 6: Final answer
    x = 2,979.39

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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.