Home / 5,431.60-8,144.10-2,140.90

Finding the Fourth Proportional to 5,431.60, 8,144.10 and 2,140.90

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Solution

The fourth proportional to 5,431.60, 8,144.10 and 2,140.90 is: 3,210.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,431.60 : 8,144.10 = 2,140.90 : x
  2. Step 2: Convert to fraction form
    5,431.60/8,144.10 = 2,140.90/x
  3. Step 3: Cross multiply
    5,431.60x = 8,144.10 × 2,140.90
  4. Step 4: Simplify right side
    5,431.60x = 17,435,703.69
  5. Step 5: Solve for x
    x = 17,435,703.69/5,431.60
  6. Step 6: Final answer
    x = 3,210.05

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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.