Home / 2,212.60-3,314.78-1,509.40

Finding the Fourth Proportional to 2,212.60, 3,314.78 and 1,509.40

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Solution

The fourth proportional to 2,212.60, 3,314.78 and 1,509.40 is: 2,261.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,212.60 : 3,314.78 = 1,509.40 : x
  2. Step 2: Convert to fraction form
    2,212.60/3,314.78 = 1,509.40/x
  3. Step 3: Cross multiply
    2,212.60x = 3,314.78 × 1,509.40
  4. Step 4: Simplify right side
    2,212.60x = 5,003,328.93
  5. Step 5: Solve for x
    x = 5,003,328.93/2,212.60
  6. Step 6: Final answer
    x = 2,261.29

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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.