Home / 6,822.90-9,412.20-4,028.40

Finding the Fourth Proportional to 6,822.90, 9,412.20 and 4,028.40

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Solution

The fourth proportional to 6,822.90, 9,412.20 and 4,028.40 is: 5,557.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,822.90 : 9,412.20 = 4,028.40 : x
  2. Step 2: Convert to fraction form
    6,822.90/9,412.20 = 4,028.40/x
  3. Step 3: Cross multiply
    6,822.90x = 9,412.20 × 4,028.40
  4. Step 4: Simplify right side
    6,822.90x = 37,916,106.48
  5. Step 5: Solve for x
    x = 37,916,106.48/6,822.90
  6. Step 6: Final answer
    x = 5,557.18

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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.