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Finding the Fourth Proportional to 3,131.49, 4,698.03 and 940.24

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Solution

The fourth proportional to 3,131.49, 4,698.03 and 940.24 is: 1,410.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,131.49 : 4,698.03 = 940.24 : x
  2. Step 2: Convert to fraction form
    3,131.49/4,698.03 = 940.24/x
  3. Step 3: Cross multiply
    3,131.49x = 4,698.03 × 940.24
  4. Step 4: Simplify right side
    3,131.49x = 4,417,285.13
  5. Step 5: Solve for x
    x = 4,417,285.13/3,131.49
  6. Step 6: Final answer
    x = 1,410.60

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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.