Home / 3,497.60-5,246.40-2,115.20

Finding the Fourth Proportional to 3,497.60, 5,246.40 and 2,115.20

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Solution

The fourth proportional to 3,497.60, 5,246.40 and 2,115.20 is: 3,172.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,497.60 : 5,246.40 = 2,115.20 : x
  2. Step 2: Convert to fraction form
    3,497.60/5,246.40 = 2,115.20/x
  3. Step 3: Cross multiply
    3,497.60x = 5,246.40 × 2,115.20
  4. Step 4: Simplify right side
    3,497.60x = 11,097,185.28
  5. Step 5: Solve for x
    x = 11,097,185.28/3,497.60
  6. Step 6: Final answer
    x = 3,172.80

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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.