Home / 1,772.28-2,445.75-986.36

Finding the Fourth Proportional to 1,772.28, 2,445.75 and 986.36

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Solution

The fourth proportional to 1,772.28, 2,445.75 and 986.36 is: 1,361.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,772.28 : 2,445.75 = 986.36 : x
  2. Step 2: Convert to fraction form
    1,772.28/2,445.75 = 986.36/x
  3. Step 3: Cross multiply
    1,772.28x = 2,445.75 × 986.36
  4. Step 4: Simplify right side
    1,772.28x = 2,412,377.74
  5. Step 5: Solve for x
    x = 2,412,377.74/1,772.28
  6. Step 6: Final answer
    x = 1,361.17

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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.