Home / 5,135.24-7,085.83-2,897.07

Finding the Fourth Proportional to 5,135.24, 7,085.83 and 2,897.07

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Solution

The fourth proportional to 5,135.24, 7,085.83 and 2,897.07 is: 3,997.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,135.24 : 7,085.83 = 2,897.07 : x
  2. Step 2: Convert to fraction form
    5,135.24/7,085.83 = 2,897.07/x
  3. Step 3: Cross multiply
    5,135.24x = 7,085.83 × 2,897.07
  4. Step 4: Simplify right side
    5,135.24x = 20,528,148.75
  5. Step 5: Solve for x
    x = 20,528,148.75/5,135.24
  6. Step 6: Final answer
    x = 3,997.51

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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.