Home / 5,421.31-8,145.65-5,202.61

Finding the Fourth Proportional to 5,421.31, 8,145.65 and 5,202.61

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Solution

The fourth proportional to 5,421.31, 8,145.65 and 5,202.61 is: 7,817.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,421.31 : 8,145.65 = 5,202.61 : x
  2. Step 2: Convert to fraction form
    5,421.31/8,145.65 = 5,202.61/x
  3. Step 3: Cross multiply
    5,421.31x = 8,145.65 × 5,202.61
  4. Step 4: Simplify right side
    5,421.31x = 42,378,640.15
  5. Step 5: Solve for x
    x = 42,378,640.15/5,421.31
  6. Step 6: Final answer
    x = 7,817.05

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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.