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Finding the Fourth Proportional to 4,981.90, 7,477.74 and 3,800.92

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Solution

The fourth proportional to 4,981.90, 7,477.74 and 3,800.92 is: 5,705.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,981.90 : 7,477.74 = 3,800.92 : x
  2. Step 2: Convert to fraction form
    4,981.90/7,477.74 = 3,800.92/x
  3. Step 3: Cross multiply
    4,981.90x = 7,477.74 × 3,800.92
  4. Step 4: Simplify right side
    4,981.90x = 28,422,291.52
  5. Step 5: Solve for x
    x = 28,422,291.52/4,981.90
  6. Step 6: Final answer
    x = 5,705.11

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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.