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Finding the Fourth Proportional to 2,333.66, 3,218.16 and 1,979.18

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Solution

The fourth proportional to 2,333.66, 3,218.16 and 1,979.18 is: 2,729.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,333.66 : 3,218.16 = 1,979.18 : x
  2. Step 2: Convert to fraction form
    2,333.66/3,218.16 = 1,979.18/x
  3. Step 3: Cross multiply
    2,333.66x = 3,218.16 × 1,979.18
  4. Step 4: Simplify right side
    2,333.66x = 6,369,322.71
  5. Step 5: Solve for x
    x = 6,369,322.71/2,333.66
  6. Step 6: Final answer
    x = 2,729.33

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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.