Home / 3,637.60-5,449.20-2,172.40

Finding the Fourth Proportional to 3,637.60, 5,449.20 and 2,172.40

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Solution

The fourth proportional to 3,637.60, 5,449.20 and 2,172.40 is: 3,254.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,637.60 : 5,449.20 = 2,172.40 : x
  2. Step 2: Convert to fraction form
    3,637.60/5,449.20 = 2,172.40/x
  3. Step 3: Cross multiply
    3,637.60x = 5,449.20 × 2,172.40
  4. Step 4: Simplify right side
    3,637.60x = 11,837,842.08
  5. Step 5: Solve for x
    x = 11,837,842.08/3,637.60
  6. Step 6: Final answer
    x = 3,254.30

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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.