Home / 3,626.41-5,430.15-1,979.55

Finding the Fourth Proportional to 3,626.41, 5,430.15 and 1,979.55

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Solution

The fourth proportional to 3,626.41, 5,430.15 and 1,979.55 is: 2,964.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,626.41 : 5,430.15 = 1,979.55 : x
  2. Step 2: Convert to fraction form
    3,626.41/5,430.15 = 1,979.55/x
  3. Step 3: Cross multiply
    3,626.41x = 5,430.15 × 1,979.55
  4. Step 4: Simplify right side
    3,626.41x = 10,749,253.43
  5. Step 5: Solve for x
    x = 10,749,253.43/3,626.41
  6. Step 6: Final answer
    x = 2,964.16

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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.