Home / 5,136.40-7,087.44-2,898.10

Finding the Fourth Proportional to 5,136.40, 7,087.44 and 2,898.10

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Solution

The fourth proportional to 5,136.40, 7,087.44 and 2,898.10 is: 3,998.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,136.40 : 7,087.44 = 2,898.10 : x
  2. Step 2: Convert to fraction form
    5,136.40/7,087.44 = 2,898.10/x
  3. Step 3: Cross multiply
    5,136.40x = 7,087.44 × 2,898.10
  4. Step 4: Simplify right side
    5,136.40x = 20,540,109.86
  5. Step 5: Solve for x
    x = 20,540,109.86/5,136.40
  6. Step 6: Final answer
    x = 3,998.93

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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.