Home / 10,638.40-15,958.20-3,243.10

Finding the Fourth Proportional to 10,638.40, 15,958.20 and 3,243.10

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Solution

The fourth proportional to 10,638.40, 15,958.20 and 3,243.10 is: 4,864.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,638.40 : 15,958.20 = 3,243.10 : x
  2. Step 2: Convert to fraction form
    10,638.40/15,958.20 = 3,243.10/x
  3. Step 3: Cross multiply
    10,638.40x = 15,958.20 × 3,243.10
  4. Step 4: Simplify right side
    10,638.40x = 51,754,038.42
  5. Step 5: Solve for x
    x = 51,754,038.42/10,638.40
  6. Step 6: Final answer
    x = 4,864.83

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1.5x scale

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.