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Finding the Fourth Proportional to 2,899.90, 4,003.53 and 2,016.90

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Solution

The fourth proportional to 2,899.90, 4,003.53 and 2,016.90 is: 2,784.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,899.90 : 4,003.53 = 2,016.90 : x
  2. Step 2: Convert to fraction form
    2,899.90/4,003.53 = 2,016.90/x
  3. Step 3: Cross multiply
    2,899.90x = 4,003.53 × 2,016.90
  4. Step 4: Simplify right side
    2,899.90x = 8,074,697.08
  5. Step 5: Solve for x
    x = 8,074,697.08/2,899.90
  6. Step 6: Final answer
    x = 2,784.48

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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.