Home / 8,812.40-13,228.32-4,428.68

Finding the Fourth Proportional to 8,812.40, 13,228.32 and 4,428.68

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Solution

The fourth proportional to 8,812.40, 13,228.32 and 4,428.68 is: 6,647.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,812.40 : 13,228.32 = 4,428.68 : x
  2. Step 2: Convert to fraction form
    8,812.40/13,228.32 = 4,428.68/x
  3. Step 3: Cross multiply
    8,812.40x = 13,228.32 × 4,428.68
  4. Step 4: Simplify right side
    8,812.40x = 58,583,996.22
  5. Step 5: Solve for x
    x = 58,583,996.22/8,812.40
  6. Step 6: Final answer
    x = 6,647.90

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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.