Home / 5,428.05-8,148.15-4,200.90

Finding the Fourth Proportional to 5,428.05, 8,148.15 and 4,200.90

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Solution

The fourth proportional to 5,428.05, 8,148.15 and 4,200.90 is: 6,306.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,428.05 : 8,148.15 = 4,200.90 : x
  2. Step 2: Convert to fraction form
    5,428.05/8,148.15 = 4,200.90/x
  3. Step 3: Cross multiply
    5,428.05x = 8,148.15 × 4,200.90
  4. Step 4: Simplify right side
    5,428.05x = 34,229,563.34
  5. Step 5: Solve for x
    x = 34,229,563.34/5,428.05
  6. Step 6: Final answer
    x = 6,306.05

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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.