Home / 1,638.66-2,439.45-1,628.93

Finding the Fourth Proportional to 1,638.66, 2,439.45 and 1,628.93

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Solution

The fourth proportional to 1,638.66, 2,439.45 and 1,628.93 is: 2,424.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,638.66 : 2,439.45 = 1,628.93 : x
  2. Step 2: Convert to fraction form
    1,638.66/2,439.45 = 1,628.93/x
  3. Step 3: Cross multiply
    1,638.66x = 2,439.45 × 1,628.93
  4. Step 4: Simplify right side
    1,638.66x = 3,973,693.29
  5. Step 5: Solve for x
    x = 3,973,693.29/1,638.66
  6. Step 6: Final answer
    x = 2,424.97

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.