Home / 5,431.60-8,147.40-2,310.80

Finding the Fourth Proportional to 5,431.60, 8,147.40 and 2,310.80

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Solution

The fourth proportional to 5,431.60, 8,147.40 and 2,310.80 is: 3,466.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,431.60 : 8,147.40 = 2,310.80 : x
  2. Step 2: Convert to fraction form
    5,431.60/8,147.40 = 2,310.80/x
  3. Step 3: Cross multiply
    5,431.60x = 8,147.40 × 2,310.80
  4. Step 4: Simplify right side
    5,431.60x = 18,827,011.92
  5. Step 5: Solve for x
    x = 18,827,011.92/5,431.60
  6. Step 6: Final answer
    x = 3,466.20

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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.