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Finding the Fourth Proportional to 2,391.92, 3,300.90 and 1,344.32

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Solution

The fourth proportional to 2,391.92, 3,300.90 and 1,344.32 is: 1,855.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,391.92 : 3,300.90 = 1,344.32 : x
  2. Step 2: Convert to fraction form
    2,391.92/3,300.90 = 1,344.32/x
  3. Step 3: Cross multiply
    2,391.92x = 3,300.90 × 1,344.32
  4. Step 4: Simplify right side
    2,391.92x = 4,437,465.89
  5. Step 5: Solve for x
    x = 4,437,465.89/2,391.92
  6. Step 6: Final answer
    x = 1,855.19

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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.