Home / 5,120.42-7,064.31-2,995.28

Finding the Fourth Proportional to 5,120.42, 7,064.31 and 2,995.28

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Solution

The fourth proportional to 5,120.42, 7,064.31 and 2,995.28 is: 4,132.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,120.42 : 7,064.31 = 2,995.28 : x
  2. Step 2: Convert to fraction form
    5,120.42/7,064.31 = 2,995.28/x
  3. Step 3: Cross multiply
    5,120.42x = 7,064.31 × 2,995.28
  4. Step 4: Simplify right side
    5,120.42x = 21,159,588.86
  5. Step 5: Solve for x
    x = 21,159,588.86/5,120.42
  6. Step 6: Final answer
    x = 4,132.40

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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.