Home / 5,931.20-8,880.60-4,278.80

Finding the Fourth Proportional to 5,931.20, 8,880.60 and 4,278.80

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Solution

The fourth proportional to 5,931.20, 8,880.60 and 4,278.80 is: 6,406.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,931.20 : 8,880.60 = 4,278.80 : x
  2. Step 2: Convert to fraction form
    5,931.20/8,880.60 = 4,278.80/x
  3. Step 3: Cross multiply
    5,931.20x = 8,880.60 × 4,278.80
  4. Step 4: Simplify right side
    5,931.20x = 37,998,311.28
  5. Step 5: Solve for x
    x = 37,998,311.28/5,931.20
  6. Step 6: Final answer
    x = 6,406.51

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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.