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Finding the Fourth Proportional to 2,557.43, 3,835.77 and 708.67

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Solution

The fourth proportional to 2,557.43, 3,835.77 and 708.67 is: 1,062.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,557.43 : 3,835.77 = 708.67 : x
  2. Step 2: Convert to fraction form
    2,557.43/3,835.77 = 708.67/x
  3. Step 3: Cross multiply
    2,557.43x = 3,835.77 × 708.67
  4. Step 4: Simplify right side
    2,557.43x = 2,718,295.13
  5. Step 5: Solve for x
    x = 2,718,295.13/2,557.43
  6. Step 6: Final answer
    x = 1,062.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.