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Finding the Fourth Proportional to 2,899.98, 4,347.84 and 1,861.15

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Solution

The fourth proportional to 2,899.98, 4,347.84 and 1,861.15 is: 2,790.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,899.98 : 4,347.84 = 1,861.15 : x
  2. Step 2: Convert to fraction form
    2,899.98/4,347.84 = 1,861.15/x
  3. Step 3: Cross multiply
    2,899.98x = 4,347.84 × 1,861.15
  4. Step 4: Simplify right side
    2,899.98x = 8,091,982.42
  5. Step 5: Solve for x
    x = 8,091,982.42/2,899.98
  6. Step 6: Final answer
    x = 2,790.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.