Home / 4,975.20-6,861.78-4,376.40

Finding the Fourth Proportional to 4,975.20, 6,861.78 and 4,376.40

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Solution

The fourth proportional to 4,975.20, 6,861.78 and 4,376.40 is: 6,035.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,975.20 : 6,861.78 = 4,376.40 : x
  2. Step 2: Convert to fraction form
    4,975.20/6,861.78 = 4,376.40/x
  3. Step 3: Cross multiply
    4,975.20x = 6,861.78 × 4,376.40
  4. Step 4: Simplify right side
    4,975.20x = 30,029,893.99
  5. Step 5: Solve for x
    x = 30,029,893.99/4,975.20
  6. Step 6: Final answer
    x = 6,035.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.