Home / 5,159.63-7,120.31-2,801.77

Finding the Fourth Proportional to 5,159.63, 7,120.31 and 2,801.77

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Solution

The fourth proportional to 5,159.63, 7,120.31 and 2,801.77 is: 3,866.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,159.63 : 7,120.31 = 2,801.77 : x
  2. Step 2: Convert to fraction form
    5,159.63/7,120.31 = 2,801.77/x
  3. Step 3: Cross multiply
    5,159.63x = 7,120.31 × 2,801.77
  4. Step 4: Simplify right side
    5,159.63x = 19,949,479.19
  5. Step 5: Solve for x
    x = 19,949,479.19/5,159.63
  6. Step 6: Final answer
    x = 3,866.45

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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.