Home / 5,159.70-7,120.04-2,801.79

Finding the Fourth Proportional to 5,159.70, 7,120.04 and 2,801.79

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Solution

The fourth proportional to 5,159.70, 7,120.04 and 2,801.79 is: 3,866.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,159.70 : 7,120.04 = 2,801.79 : x
  2. Step 2: Convert to fraction form
    5,159.70/7,120.04 = 2,801.79/x
  3. Step 3: Cross multiply
    5,159.70x = 7,120.04 × 2,801.79
  4. Step 4: Simplify right side
    5,159.70x = 19,948,842.86
  5. Step 5: Solve for x
    x = 19,948,842.86/5,159.70
  6. Step 6: Final answer
    x = 3,866.28

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1.5x scale

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.