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Finding the Fourth Proportional to 2,885.01, 3,981.33 and 1,643.01

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Solution

The fourth proportional to 2,885.01, 3,981.33 and 1,643.01 is: 2,267.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,885.01 : 3,981.33 = 1,643.01 : x
  2. Step 2: Convert to fraction form
    2,885.01/3,981.33 = 1,643.01/x
  3. Step 3: Cross multiply
    2,885.01x = 3,981.33 × 1,643.01
  4. Step 4: Simplify right side
    2,885.01x = 6,541,365.00
  5. Step 5: Solve for x
    x = 6,541,365.00/2,885.01
  6. Step 6: Final answer
    x = 2,267.36

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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.