Home / 5,243.63-7,236.20-2,885.72

Finding the Fourth Proportional to 5,243.63, 7,236.20 and 2,885.72

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Solution

The fourth proportional to 5,243.63, 7,236.20 and 2,885.72 is: 3,982.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,243.63 : 7,236.20 = 2,885.72 : x
  2. Step 2: Convert to fraction form
    5,243.63/7,236.20 = 2,885.72/x
  3. Step 3: Cross multiply
    5,243.63x = 7,236.20 × 2,885.72
  4. Step 4: Simplify right side
    5,243.63x = 20,881,618.10
  5. Step 5: Solve for x
    x = 20,881,618.10/5,243.63
  6. Step 6: Final answer
    x = 3,982.29

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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.