Home / 3,915.59-5,403.56-2,147.16

Finding the Fourth Proportional to 3,915.59, 5,403.56 and 2,147.16

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Solution

The fourth proportional to 3,915.59, 5,403.56 and 2,147.16 is: 2,963.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,915.59 : 5,403.56 = 2,147.16 : x
  2. Step 2: Convert to fraction form
    3,915.59/5,403.56 = 2,147.16/x
  3. Step 3: Cross multiply
    3,915.59x = 5,403.56 × 2,147.16
  4. Step 4: Simplify right side
    3,915.59x = 11,602,297.15
  5. Step 5: Solve for x
    x = 11,602,297.15/3,915.59
  6. Step 6: Final answer
    x = 2,963.11

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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.