Home / 5,159.57-7,120.50-2,921.64

Finding the Fourth Proportional to 5,159.57, 7,120.50 and 2,921.64

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Solution

The fourth proportional to 5,159.57, 7,120.50 and 2,921.64 is: 4,032.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,159.57 : 7,120.50 = 2,921.64 : x
  2. Step 2: Convert to fraction form
    5,159.57/7,120.50 = 2,921.64/x
  3. Step 3: Cross multiply
    5,159.57x = 7,120.50 × 2,921.64
  4. Step 4: Simplify right side
    5,159.57x = 20,803,499.96
  5. Step 5: Solve for x
    x = 20,803,499.96/5,159.57
  6. Step 6: Final answer
    x = 4,032.03

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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.