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Finding the Fourth Proportional to 4,920.66, 7,380.99 and 1,840.50

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Solution

The fourth proportional to 4,920.66, 7,380.99 and 1,840.50 is: 2,760.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,920.66 : 7,380.99 = 1,840.50 : x
  2. Step 2: Convert to fraction form
    4,920.66/7,380.99 = 1,840.50/x
  3. Step 3: Cross multiply
    4,920.66x = 7,380.99 × 1,840.50
  4. Step 4: Simplify right side
    4,920.66x = 13,584,712.10
  5. Step 5: Solve for x
    x = 13,584,712.10/4,920.66
  6. Step 6: Final answer
    x = 2,760.75

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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.