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Finding the Fourth Proportional to 2,386.84, 3,293.12 and 1,338.88

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Solution

The fourth proportional to 2,386.84, 3,293.12 and 1,338.88 is: 1,847.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,386.84 : 3,293.12 = 1,338.88 : x
  2. Step 2: Convert to fraction form
    2,386.84/3,293.12 = 1,338.88/x
  3. Step 3: Cross multiply
    2,386.84x = 3,293.12 × 1,338.88
  4. Step 4: Simplify right side
    2,386.84x = 4,409,092.51
  5. Step 5: Solve for x
    x = 4,409,092.51/2,386.84
  6. Step 6: Final answer
    x = 1,847.25

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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.