Home / 8,641.28-12,953.49-4,688.96

Finding the Fourth Proportional to 8,641.28, 12,953.49 and 4,688.96

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Solution

The fourth proportional to 8,641.28, 12,953.49 and 4,688.96 is: 7,028.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,641.28 : 12,953.49 = 4,688.96 : x
  2. Step 2: Convert to fraction form
    8,641.28/12,953.49 = 4,688.96/x
  3. Step 3: Cross multiply
    8,641.28x = 12,953.49 × 4,688.96
  4. Step 4: Simplify right side
    8,641.28x = 60,738,362.69
  5. Step 5: Solve for x
    x = 60,738,362.69/8,641.28
  6. Step 6: Final answer
    x = 7,028.87

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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.