Home / 3,915.95-5,405.79-2,501.55

Finding the Fourth Proportional to 3,915.95, 5,405.79 and 2,501.55

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Solution

The fourth proportional to 3,915.95, 5,405.79 and 2,501.55 is: 3,453.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,915.95 : 5,405.79 = 2,501.55 : x
  2. Step 2: Convert to fraction form
    3,915.95/5,405.79 = 2,501.55/x
  3. Step 3: Cross multiply
    3,915.95x = 5,405.79 × 2,501.55
  4. Step 4: Simplify right side
    3,915.95x = 13,522,853.97
  5. Step 5: Solve for x
    x = 13,522,853.97/3,915.95
  6. Step 6: Final answer
    x = 3,453.28

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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.