Home / 2,615.75-3,607.91-2,220.05

Finding the Fourth Proportional to 2,615.75, 3,607.91 and 2,220.05

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Solution

The fourth proportional to 2,615.75, 3,607.91 and 2,220.05 is: 3,062.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,615.75 : 3,607.91 = 2,220.05 : x
  2. Step 2: Convert to fraction form
    2,615.75/3,607.91 = 2,220.05/x
  3. Step 3: Cross multiply
    2,615.75x = 3,607.91 × 2,220.05
  4. Step 4: Simplify right side
    2,615.75x = 8,009,711.46
  5. Step 5: Solve for x
    x = 8,009,711.46/2,615.75
  6. Step 6: Final answer
    x = 3,062.11

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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.