Home / 5,136.45-7,088.28-2,778.58

Finding the Fourth Proportional to 5,136.45, 7,088.28 and 2,778.58

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Solution

The fourth proportional to 5,136.45, 7,088.28 and 2,778.58 is: 3,834.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,136.45 : 7,088.28 = 2,778.58 : x
  2. Step 2: Convert to fraction form
    5,136.45/7,088.28 = 2,778.58/x
  3. Step 3: Cross multiply
    5,136.45x = 7,088.28 × 2,778.58
  4. Step 4: Simplify right side
    5,136.45x = 19,695,353.04
  5. Step 5: Solve for x
    x = 19,695,353.04/5,136.45
  6. Step 6: Final answer
    x = 3,834.43

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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.