Home / 5,159.84-7,120.58-2,802.02

Finding the Fourth Proportional to 5,159.84, 7,120.58 and 2,802.02

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Solution

The fourth proportional to 5,159.84, 7,120.58 and 2,802.02 is: 3,866.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,159.84 : 7,120.58 = 2,802.02 : x
  2. Step 2: Convert to fraction form
    5,159.84/7,120.58 = 2,802.02/x
  3. Step 3: Cross multiply
    5,159.84x = 7,120.58 × 2,802.02
  4. Step 4: Simplify right side
    5,159.84x = 19,951,957.96
  5. Step 5: Solve for x
    x = 19,951,957.96/5,159.84
  6. Step 6: Final answer
    x = 3,866.78

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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.