Home / 1,288.96-1,936.18-802.36

Finding the Fourth Proportional to 1,288.96, 1,936.18 and 802.36

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Solution

The fourth proportional to 1,288.96, 1,936.18 and 802.36 is: 1,205.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288.96 : 1,936.18 = 802.36 : x
  2. Step 2: Convert to fraction form
    1,288.96/1,936.18 = 802.36/x
  3. Step 3: Cross multiply
    1,288.96x = 1,936.18 × 802.36
  4. Step 4: Simplify right side
    1,288.96x = 1,553,503.66
  5. Step 5: Solve for x
    x = 1,553,503.66/1,288.96
  6. Step 6: Final answer
    x = 1,205.24

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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.