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Finding the Fourth Proportional to 4,940.40, 7,410.20 and 1,477.66

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Solution

The fourth proportional to 4,940.40, 7,410.20 and 1,477.66 is: 2,216.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,940.40 : 7,410.20 = 1,477.66 : x
  2. Step 2: Convert to fraction form
    4,940.40/7,410.20 = 1,477.66/x
  3. Step 3: Cross multiply
    4,940.40x = 7,410.20 × 1,477.66
  4. Step 4: Simplify right side
    4,940.40x = 10,949,756.13
  5. Step 5: Solve for x
    x = 10,949,756.13/4,940.40
  6. Step 6: Final answer
    x = 2,216.37

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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.