Home / 2,630.12-3,634.79-2,157.28

Finding the Fourth Proportional to 2,630.12, 3,634.79 and 2,157.28

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Solution

The fourth proportional to 2,630.12, 3,634.79 and 2,157.28 is: 2,981.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,630.12 : 3,634.79 = 2,157.28 : x
  2. Step 2: Convert to fraction form
    2,630.12/3,634.79 = 2,157.28/x
  3. Step 3: Cross multiply
    2,630.12x = 3,634.79 × 2,157.28
  4. Step 4: Simplify right side
    2,630.12x = 7,841,259.77
  5. Step 5: Solve for x
    x = 7,841,259.77/2,630.12
  6. Step 6: Final answer
    x = 2,981.33

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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.