Home / 6,620.04-9,920.16-4,428.36

Finding the Fourth Proportional to 6,620.04, 9,920.16 and 4,428.36

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Solution

The fourth proportional to 6,620.04, 9,920.16 and 4,428.36 is: 6,635.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,620.04 : 9,920.16 = 4,428.36 : x
  2. Step 2: Convert to fraction form
    6,620.04/9,920.16 = 4,428.36/x
  3. Step 3: Cross multiply
    6,620.04x = 9,920.16 × 4,428.36
  4. Step 4: Simplify right side
    6,620.04x = 43,930,039.74
  5. Step 5: Solve for x
    x = 43,930,039.74/6,620.04
  6. Step 6: Final answer
    x = 6,635.92

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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.