Home / 5,145.24-7,100.34-2,907.21

Finding the Fourth Proportional to 5,145.24, 7,100.34 and 2,907.21

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Solution

The fourth proportional to 5,145.24, 7,100.34 and 2,907.21 is: 4,011.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,145.24 : 7,100.34 = 2,907.21 : x
  2. Step 2: Convert to fraction form
    5,145.24/7,100.34 = 2,907.21/x
  3. Step 3: Cross multiply
    5,145.24x = 7,100.34 × 2,907.21
  4. Step 4: Simplify right side
    5,145.24x = 20,642,195.18
  5. Step 5: Solve for x
    x = 20,642,195.18/5,145.24
  6. Step 6: Final answer
    x = 4,011.90

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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.