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Finding the Fourth Proportional to 2,455.92, 3,391.74 and 2,122.74

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Solution

The fourth proportional to 2,455.92, 3,391.74 and 2,122.74 is: 2,931.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,455.92 : 3,391.74 = 2,122.74 : x
  2. Step 2: Convert to fraction form
    2,455.92/3,391.74 = 2,122.74/x
  3. Step 3: Cross multiply
    2,455.92x = 3,391.74 × 2,122.74
  4. Step 4: Simplify right side
    2,455.92x = 7,199,782.17
  5. Step 5: Solve for x
    x = 7,199,782.17/2,455.92
  6. Step 6: Final answer
    x = 2,931.60

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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.