Home / 2,239.60-3,086.04-1,577.20

Finding the Fourth Proportional to 2,239.60, 3,086.04 and 1,577.20

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Solution

The fourth proportional to 2,239.60, 3,086.04 and 1,577.20 is: 2,173.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,239.60 : 3,086.04 = 1,577.20 : x
  2. Step 2: Convert to fraction form
    2,239.60/3,086.04 = 1,577.20/x
  3. Step 3: Cross multiply
    2,239.60x = 3,086.04 × 1,577.20
  4. Step 4: Simplify right side
    2,239.60x = 4,867,302.29
  5. Step 5: Solve for x
    x = 4,867,302.29/2,239.60
  6. Step 6: Final answer
    x = 2,173.29

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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.