Home / 5,628.20-8,436.90-4,378.10

Finding the Fourth Proportional to 5,628.20, 8,436.90 and 4,378.10

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Solution

The fourth proportional to 5,628.20, 8,436.90 and 4,378.10 is: 6,562.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,628.20 : 8,436.90 = 4,378.10 : x
  2. Step 2: Convert to fraction form
    5,628.20/8,436.90 = 4,378.10/x
  3. Step 3: Cross multiply
    5,628.20x = 8,436.90 × 4,378.10
  4. Step 4: Simplify right side
    5,628.20x = 36,937,591.89
  5. Step 5: Solve for x
    x = 36,937,591.89/5,628.20
  6. Step 6: Final answer
    x = 6,562.95

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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.