Home / 5,136.18-7,085.91-2,897.47

Finding the Fourth Proportional to 5,136.18, 7,085.91 and 2,897.47

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Solution

The fourth proportional to 5,136.18, 7,085.91 and 2,897.47 is: 3,997.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,136.18 : 7,085.91 = 2,897.47 : x
  2. Step 2: Convert to fraction form
    5,136.18/7,085.91 = 2,897.47/x
  3. Step 3: Cross multiply
    5,136.18x = 7,085.91 × 2,897.47
  4. Step 4: Simplify right side
    5,136.18x = 20,531,211.65
  5. Step 5: Solve for x
    x = 20,531,211.65/5,136.18
  6. Step 6: Final answer
    x = 3,997.37

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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.