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Finding the Fourth Proportional to 2,885.07, 3,980.01 and 2,486.04

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Solution

The fourth proportional to 2,885.07, 3,980.01 and 2,486.04 is: 3,429.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,885.07 : 3,980.01 = 2,486.04 : x
  2. Step 2: Convert to fraction form
    2,885.07/3,980.01 = 2,486.04/x
  3. Step 3: Cross multiply
    2,885.07x = 3,980.01 × 2,486.04
  4. Step 4: Simplify right side
    2,885.07x = 9,894,464.06
  5. Step 5: Solve for x
    x = 9,894,464.06/2,885.07
  6. Step 6: Final answer
    x = 3,429.54

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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.