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Finding the Fourth Proportional to 2,625.80, 3,626.72 and 2,130.99

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Solution

The fourth proportional to 2,625.80, 3,626.72 and 2,130.99 is: 2,943.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,625.80 : 3,626.72 = 2,130.99 : x
  2. Step 2: Convert to fraction form
    2,625.80/3,626.72 = 2,130.99/x
  3. Step 3: Cross multiply
    2,625.80x = 3,626.72 × 2,130.99
  4. Step 4: Simplify right side
    2,625.80x = 7,728,493.40
  5. Step 5: Solve for x
    x = 7,728,493.40/2,625.80
  6. Step 6: Final answer
    x = 2,943.30

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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.