Home / 5,159.16-7,119.60-2,921

Finding the Fourth Proportional to 5,159.16, 7,119.60 and 2,921

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Solution

The fourth proportional to 5,159.16, 7,119.60 and 2,921 is: 4,030.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,159.16 : 7,119.60 = 2,921 : x
  2. Step 2: Convert to fraction form
    5,159.16/7,119.60 = 2,921/x
  3. Step 3: Cross multiply
    5,159.16x = 7,119.60 × 2,921
  4. Step 4: Simplify right side
    5,159.16x = 20,796,351.60
  5. Step 5: Solve for x
    x = 20,796,351.60/5,159.16
  6. Step 6: Final answer
    x = 4,030.96

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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.