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Finding the Fourth Proportional to 3,398.04, 4,688.73 and 1,905.82

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Solution

The fourth proportional to 3,398.04, 4,688.73 and 1,905.82 is: 2,629.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,398.04 : 4,688.73 = 1,905.82 : x
  2. Step 2: Convert to fraction form
    3,398.04/4,688.73 = 1,905.82/x
  3. Step 3: Cross multiply
    3,398.04x = 4,688.73 × 1,905.82
  4. Step 4: Simplify right side
    3,398.04x = 8,935,875.41
  5. Step 5: Solve for x
    x = 8,935,875.41/3,398.04
  6. Step 6: Final answer
    x = 2,629.71

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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.