Home / 5,136.46-7,087.70-2,898.20

Finding the Fourth Proportional to 5,136.46, 7,087.70 and 2,898.20

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Solution

The fourth proportional to 5,136.46, 7,087.70 and 2,898.20 is: 3,999.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,136.46 : 7,087.70 = 2,898.20 : x
  2. Step 2: Convert to fraction form
    5,136.46/7,087.70 = 2,898.20/x
  3. Step 3: Cross multiply
    5,136.46x = 7,087.70 × 2,898.20
  4. Step 4: Simplify right side
    5,136.46x = 20,541,557.65
  5. Step 5: Solve for x
    x = 20,541,557.65/5,136.46
  6. Step 6: Final answer
    x = 3,999.17

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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.