Home / 5,119.71-7,685.48-2,898.99

Finding the Fourth Proportional to 5,119.71, 7,685.48 and 2,898.99

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Solution

The fourth proportional to 5,119.71, 7,685.48 and 2,898.99 is: 4,351.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,119.71 : 7,685.48 = 2,898.99 : x
  2. Step 2: Convert to fraction form
    5,119.71/7,685.48 = 2,898.99/x
  3. Step 3: Cross multiply
    5,119.71x = 7,685.48 × 2,898.99
  4. Step 4: Simplify right side
    5,119.71x = 22,280,136.91
  5. Step 5: Solve for x
    x = 22,280,136.91/5,119.71
  6. Step 6: Final answer
    x = 4,351.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.