Home / 6,571.28-9,855.95-2,128.38

Finding the Fourth Proportional to 6,571.28, 9,855.95 and 2,128.38

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Solution

The fourth proportional to 6,571.28, 9,855.95 and 2,128.38 is: 3,192.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,571.28 : 9,855.95 = 2,128.38 : x
  2. Step 2: Convert to fraction form
    6,571.28/9,855.95 = 2,128.38/x
  3. Step 3: Cross multiply
    6,571.28x = 9,855.95 × 2,128.38
  4. Step 4: Simplify right side
    6,571.28x = 20,977,159.26
  5. Step 5: Solve for x
    x = 20,977,159.26/6,571.28
  6. Step 6: Final answer
    x = 3,192.25

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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.