Home / 8,109.18-12,154.02-3,720.60

Finding the Fourth Proportional to 8,109.18, 12,154.02 and 3,720.60

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Solution

The fourth proportional to 8,109.18, 12,154.02 and 3,720.60 is: 5,576.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,109.18 : 12,154.02 = 3,720.60 : x
  2. Step 2: Convert to fraction form
    8,109.18/12,154.02 = 3,720.60/x
  3. Step 3: Cross multiply
    8,109.18x = 12,154.02 × 3,720.60
  4. Step 4: Simplify right side
    8,109.18x = 45,220,246.81
  5. Step 5: Solve for x
    x = 45,220,246.81/8,109.18
  6. Step 6: Final answer
    x = 5,576.43

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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.