Home / 8,431.81-12,648.02-3,166.29

Finding the Fourth Proportional to 8,431.81, 12,648.02 and 3,166.29

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Solution

The fourth proportional to 8,431.81, 12,648.02 and 3,166.29 is: 4,749.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,431.81 : 12,648.02 = 3,166.29 : x
  2. Step 2: Convert to fraction form
    8,431.81/12,648.02 = 3,166.29/x
  3. Step 3: Cross multiply
    8,431.81x = 12,648.02 × 3,166.29
  4. Step 4: Simplify right side
    8,431.81x = 40,047,299.25
  5. Step 5: Solve for x
    x = 40,047,299.25/8,431.81
  6. Step 6: Final answer
    x = 4,749.55

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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.