Home / 3,453.12-5,177.52-1,915.20

Finding the Fourth Proportional to 3,453.12, 5,177.52 and 1,915.20

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Solution

The fourth proportional to 3,453.12, 5,177.52 and 1,915.20 is: 2,871.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,453.12 : 5,177.52 = 1,915.20 : x
  2. Step 2: Convert to fraction form
    3,453.12/5,177.52 = 1,915.20/x
  3. Step 3: Cross multiply
    3,453.12x = 5,177.52 × 1,915.20
  4. Step 4: Simplify right side
    3,453.12x = 9,915,986.30
  5. Step 5: Solve for x
    x = 9,915,986.30/3,453.12
  6. Step 6: Final answer
    x = 2,871.60

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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.