Home / 5,135.18-7,084.53-2,896.47

Finding the Fourth Proportional to 5,135.18, 7,084.53 and 2,896.47

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Solution

The fourth proportional to 5,135.18, 7,084.53 and 2,896.47 is: 3,995.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,135.18 : 7,084.53 = 2,896.47 : x
  2. Step 2: Convert to fraction form
    5,135.18/7,084.53 = 2,896.47/x
  3. Step 3: Cross multiply
    5,135.18x = 7,084.53 × 2,896.47
  4. Step 4: Simplify right side
    5,135.18x = 20,520,128.61
  5. Step 5: Solve for x
    x = 20,520,128.61/5,135.18
  6. Step 6: Final answer
    x = 3,995.99

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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.