Home / 5,136.70-7,088.65-2,778.84

Finding the Fourth Proportional to 5,136.70, 7,088.65 and 2,778.84

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Solution

The fourth proportional to 5,136.70, 7,088.65 and 2,778.84 is: 3,834.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,136.70 : 7,088.65 = 2,778.84 : x
  2. Step 2: Convert to fraction form
    5,136.70/7,088.65 = 2,778.84/x
  3. Step 3: Cross multiply
    5,136.70x = 7,088.65 × 2,778.84
  4. Step 4: Simplify right side
    5,136.70x = 19,698,224.17
  5. Step 5: Solve for x
    x = 19,698,224.17/5,136.70
  6. Step 6: Final answer
    x = 3,834.80

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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.