Home / 5,211.39-7,816.87-1,513.55

Finding the Fourth Proportional to 5,211.39, 7,816.87 and 1,513.55

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Solution

The fourth proportional to 5,211.39, 7,816.87 and 1,513.55 is: 2,270.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,211.39 : 7,816.87 = 1,513.55 : x
  2. Step 2: Convert to fraction form
    5,211.39/7,816.87 = 1,513.55/x
  3. Step 3: Cross multiply
    5,211.39x = 7,816.87 × 1,513.55
  4. Step 4: Simplify right side
    5,211.39x = 11,831,180.72
  5. Step 5: Solve for x
    x = 11,831,180.72/5,211.39
  6. Step 6: Final answer
    x = 2,270.25

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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.