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Finding the Fourth Proportional to 5,276.52, 7,919.52 and 2,813.40

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Solution

The fourth proportional to 5,276.52, 7,919.52 and 2,813.40 is: 4,222.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,276.52 : 7,919.52 = 2,813.40 : x
  2. Step 2: Convert to fraction form
    5,276.52/7,919.52 = 2,813.40/x
  3. Step 3: Cross multiply
    5,276.52x = 7,919.52 × 2,813.40
  4. Step 4: Simplify right side
    5,276.52x = 22,280,777.57
  5. Step 5: Solve for x
    x = 22,280,777.57/5,276.52
  6. Step 6: Final answer
    x = 4,222.63

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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.