Home / 5,431.60-8,145.78-4,338.10

Finding the Fourth Proportional to 5,431.60, 8,145.78 and 4,338.10

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Solution

The fourth proportional to 5,431.60, 8,145.78 and 4,338.10 is: 6,505.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,431.60 : 8,145.78 = 4,338.10 : x
  2. Step 2: Convert to fraction form
    5,431.60/8,145.78 = 4,338.10/x
  3. Step 3: Cross multiply
    5,431.60x = 8,145.78 × 4,338.10
  4. Step 4: Simplify right side
    5,431.60x = 35,337,208.22
  5. Step 5: Solve for x
    x = 35,337,208.22/5,431.60
  6. Step 6: Final answer
    x = 6,505.86

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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.