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Finding the Fourth Proportional to 3,471.35, 4,790.48 and 1,899.47

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Solution

The fourth proportional to 3,471.35, 4,790.48 and 1,899.47 is: 2,621.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,471.35 : 4,790.48 = 1,899.47 : x
  2. Step 2: Convert to fraction form
    3,471.35/4,790.48 = 1,899.47/x
  3. Step 3: Cross multiply
    3,471.35x = 4,790.48 × 1,899.47
  4. Step 4: Simplify right side
    3,471.35x = 9,099,373.05
  5. Step 5: Solve for x
    x = 9,099,373.05/3,471.35
  6. Step 6: Final answer
    x = 2,621.28

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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.