Home / 3,490.21-4,818.72-2,165.86

Finding the Fourth Proportional to 3,490.21, 4,818.72 and 2,165.86

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Solution

The fourth proportional to 3,490.21, 4,818.72 and 2,165.86 is: 2,990.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,490.21 : 4,818.72 = 2,165.86 : x
  2. Step 2: Convert to fraction form
    3,490.21/4,818.72 = 2,165.86/x
  3. Step 3: Cross multiply
    3,490.21x = 4,818.72 × 2,165.86
  4. Step 4: Simplify right side
    3,490.21x = 10,436,672.90
  5. Step 5: Solve for x
    x = 10,436,672.90/3,490.21
  6. Step 6: Final answer
    x = 2,990.27

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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.