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Finding the Fourth Proportional to 3,129.66, 4,314.48 and 2,133.66

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Solution

The fourth proportional to 3,129.66, 4,314.48 and 2,133.66 is: 2,941.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129.66 : 4,314.48 = 2,133.66 : x
  2. Step 2: Convert to fraction form
    3,129.66/4,314.48 = 2,133.66/x
  3. Step 3: Cross multiply
    3,129.66x = 4,314.48 × 2,133.66
  4. Step 4: Simplify right side
    3,129.66x = 9,205,633.40
  5. Step 5: Solve for x
    x = 9,205,633.40/3,129.66
  6. Step 6: Final answer
    x = 2,941.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.