Home / 2,225.81-3,071.64-1,281.62

Finding the Fourth Proportional to 2,225.81, 3,071.64 and 1,281.62

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Solution

The fourth proportional to 2,225.81, 3,071.64 and 1,281.62 is: 1,768.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,225.81 : 3,071.64 = 1,281.62 : x
  2. Step 2: Convert to fraction form
    2,225.81/3,071.64 = 1,281.62/x
  3. Step 3: Cross multiply
    2,225.81x = 3,071.64 × 1,281.62
  4. Step 4: Simplify right side
    2,225.81x = 3,936,659.90
  5. Step 5: Solve for x
    x = 3,936,659.90/2,225.81
  6. Step 6: Final answer
    x = 1,768.65

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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.