Home / 4,290.96-6,440.40-2,650.68

Finding the Fourth Proportional to 4,290.96, 6,440.40 and 2,650.68

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Solution

The fourth proportional to 4,290.96, 6,440.40 and 2,650.68 is: 3,978.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,290.96 : 6,440.40 = 2,650.68 : x
  2. Step 2: Convert to fraction form
    4,290.96/6,440.40 = 2,650.68/x
  3. Step 3: Cross multiply
    4,290.96x = 6,440.40 × 2,650.68
  4. Step 4: Simplify right side
    4,290.96x = 17,071,439.47
  5. Step 5: Solve for x
    x = 17,071,439.47/4,290.96
  6. Step 6: Final answer
    x = 3,978.47

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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.