Home / 3,398.10-4,688.91-1,905.92

Finding the Fourth Proportional to 3,398.10, 4,688.91 and 1,905.92

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Solution

The fourth proportional to 3,398.10, 4,688.91 and 1,905.92 is: 2,629.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,398.10 : 4,688.91 = 1,905.92 : x
  2. Step 2: Convert to fraction form
    3,398.10/4,688.91 = 1,905.92/x
  3. Step 3: Cross multiply
    3,398.10x = 4,688.91 × 1,905.92
  4. Step 4: Simplify right side
    3,398.10x = 8,936,677.82
  5. Step 5: Solve for x
    x = 8,936,677.82/3,398.10
  6. Step 6: Final answer
    x = 2,629.91

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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.