Home / 5,145.56-7,101.18-2,907.79

Finding the Fourth Proportional to 5,145.56, 7,101.18 and 2,907.79

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Solution

The fourth proportional to 5,145.56, 7,101.18 and 2,907.79 is: 4,012.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,145.56 : 7,101.18 = 2,907.79 : x
  2. Step 2: Convert to fraction form
    5,145.56/7,101.18 = 2,907.79/x
  3. Step 3: Cross multiply
    5,145.56x = 7,101.18 × 2,907.79
  4. Step 4: Simplify right side
    5,145.56x = 20,648,740.19
  5. Step 5: Solve for x
    x = 20,648,740.19/5,145.56
  6. Step 6: Final answer
    x = 4,012.92

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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.