Home / 5,145.02-7,099.70-2,907.29

Finding the Fourth Proportional to 5,145.02, 7,099.70 and 2,907.29

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Solution

The fourth proportional to 5,145.02, 7,099.70 and 2,907.29 is: 4,011.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,145.02 : 7,099.70 = 2,907.29 : x
  2. Step 2: Convert to fraction form
    5,145.02/7,099.70 = 2,907.29/x
  3. Step 3: Cross multiply
    5,145.02x = 7,099.70 × 2,907.29
  4. Step 4: Simplify right side
    5,145.02x = 20,640,906.38
  5. Step 5: Solve for x
    x = 20,640,906.38/5,145.02
  6. Step 6: Final answer
    x = 4,011.82

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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.