Home / 5,515.96-7,612.68-3,126.64

Finding the Fourth Proportional to 5,515.96, 7,612.68 and 3,126.64

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Solution

The fourth proportional to 5,515.96, 7,612.68 and 3,126.64 is: 4,315.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,515.96 : 7,612.68 = 3,126.64 : x
  2. Step 2: Convert to fraction form
    5,515.96/7,612.68 = 3,126.64/x
  3. Step 3: Cross multiply
    5,515.96x = 7,612.68 × 3,126.64
  4. Step 4: Simplify right side
    5,515.96x = 23,802,109.80
  5. Step 5: Solve for x
    x = 23,802,109.80/5,515.96
  6. Step 6: Final answer
    x = 4,315.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.