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Finding the Fourth Proportional to 5,385.83, 8,078.22 and 1,874.99

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Solution

The fourth proportional to 5,385.83, 8,078.22 and 1,874.99 is: 2,812.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,385.83 : 8,078.22 = 1,874.99 : x
  2. Step 2: Convert to fraction form
    5,385.83/8,078.22 = 1,874.99/x
  3. Step 3: Cross multiply
    5,385.83x = 8,078.22 × 1,874.99
  4. Step 4: Simplify right side
    5,385.83x = 15,146,581.72
  5. Step 5: Solve for x
    x = 15,146,581.72/5,385.83
  6. Step 6: Final answer
    x = 2,812.30

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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.