Home / 5,136.48-7,088.36-2,778.64

Finding the Fourth Proportional to 5,136.48, 7,088.36 and 2,778.64

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Solution

The fourth proportional to 5,136.48, 7,088.36 and 2,778.64 is: 3,834.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,136.48 : 7,088.36 = 2,778.64 : x
  2. Step 2: Convert to fraction form
    5,136.48/7,088.36 = 2,778.64/x
  3. Step 3: Cross multiply
    5,136.48x = 7,088.36 × 2,778.64
  4. Step 4: Simplify right side
    5,136.48x = 19,695,969.02
  5. Step 5: Solve for x
    x = 19,695,969.02/5,136.48
  6. Step 6: Final answer
    x = 3,834.53

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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.