Home / 5,136.54-7,088.40-2,778.68

Finding the Fourth Proportional to 5,136.54, 7,088.40 and 2,778.68

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Solution

The fourth proportional to 5,136.54, 7,088.40 and 2,778.68 is: 3,834.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,136.54 : 7,088.40 = 2,778.68 : x
  2. Step 2: Convert to fraction form
    5,136.54/7,088.40 = 2,778.68/x
  3. Step 3: Cross multiply
    5,136.54x = 7,088.40 × 2,778.68
  4. Step 4: Simplify right side
    5,136.54x = 19,696,395.31
  5. Step 5: Solve for x
    x = 19,696,395.31/5,136.54
  6. Step 6: Final answer
    x = 3,834.56

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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.