Home / 8,355.28-12,533.30-3,421.46

Finding the Fourth Proportional to 8,355.28, 12,533.30 and 3,421.46

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Solution

The fourth proportional to 8,355.28, 12,533.30 and 3,421.46 is: 5,132.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,355.28 : 12,533.30 = 3,421.46 : x
  2. Step 2: Convert to fraction form
    8,355.28/12,533.30 = 3,421.46/x
  3. Step 3: Cross multiply
    8,355.28x = 12,533.30 × 3,421.46
  4. Step 4: Simplify right side
    8,355.28x = 42,882,185.65
  5. Step 5: Solve for x
    x = 42,882,185.65/8,355.28
  6. Step 6: Final answer
    x = 5,132.35

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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.