Home / 2,245-3,087.66-1,802.20

Finding the Fourth Proportional to 2,245, 3,087.66 and 1,802.20

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Solution

The fourth proportional to 2,245, 3,087.66 and 1,802.20 is: 2,478.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,245 : 3,087.66 = 1,802.20 : x
  2. Step 2: Convert to fraction form
    2,245/3,087.66 = 1,802.20/x
  3. Step 3: Cross multiply
    2,245x = 3,087.66 × 1,802.20
  4. Step 4: Simplify right side
    2,245x = 5,564,580.85
  5. Step 5: Solve for x
    x = 5,564,580.85/2,245
  6. Step 6: Final answer
    x = 2,478.66

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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.