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Finding the Fourth Proportional to 2,900.88, 4,328.64 and 2,550.96

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Solution

The fourth proportional to 2,900.88, 4,328.64 and 2,550.96 is: 3,806.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,900.88 : 4,328.64 = 2,550.96 : x
  2. Step 2: Convert to fraction form
    2,900.88/4,328.64 = 2,550.96/x
  3. Step 3: Cross multiply
    2,900.88x = 4,328.64 × 2,550.96
  4. Step 4: Simplify right side
    2,900.88x = 11,042,187.49
  5. Step 5: Solve for x
    x = 11,042,187.49/2,900.88
  6. Step 6: Final answer
    x = 3,806.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.