Home / 1,637.82-2,454.30-986.58

Finding the Fourth Proportional to 1,637.82, 2,454.30 and 986.58

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Solution

The fourth proportional to 1,637.82, 2,454.30 and 986.58 is: 1,478.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,637.82 : 2,454.30 = 986.58 : x
  2. Step 2: Convert to fraction form
    1,637.82/2,454.30 = 986.58/x
  3. Step 3: Cross multiply
    1,637.82x = 2,454.30 × 986.58
  4. Step 4: Simplify right side
    1,637.82x = 2,421,363.29
  5. Step 5: Solve for x
    x = 2,421,363.29/1,637.82
  6. Step 6: Final answer
    x = 1,478.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.