Home / 5,130.09-7,689.62-3,664.80

Finding the Fourth Proportional to 5,130.09, 7,689.62 and 3,664.80

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Solution

The fourth proportional to 5,130.09, 7,689.62 and 3,664.80 is: 5,493.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,130.09 : 7,689.62 = 3,664.80 : x
  2. Step 2: Convert to fraction form
    5,130.09/7,689.62 = 3,664.80/x
  3. Step 3: Cross multiply
    5,130.09x = 7,689.62 × 3,664.80
  4. Step 4: Simplify right side
    5,130.09x = 28,180,928.54
  5. Step 5: Solve for x
    x = 28,180,928.54/5,130.09
  6. Step 6: Final answer
    x = 5,493.26

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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.