Home / 3,490.20-4,821.12-2,903.76

Finding the Fourth Proportional to 3,490.20, 4,821.12 and 2,903.76

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Solution

The fourth proportional to 3,490.20, 4,821.12 and 2,903.76 is: 4,011.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,490.20 : 4,821.12 = 2,903.76 : x
  2. Step 2: Convert to fraction form
    3,490.20/4,821.12 = 2,903.76/x
  3. Step 3: Cross multiply
    3,490.20x = 4,821.12 × 2,903.76
  4. Step 4: Simplify right side
    3,490.20x = 13,999,375.41
  5. Step 5: Solve for x
    x = 13,999,375.41/3,490.20
  6. Step 6: Final answer
    x = 4,011.05

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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.