Home / 8,318.90-12,483.48-3,875.78

Finding the Fourth Proportional to 8,318.90, 12,483.48 and 3,875.78

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Solution

The fourth proportional to 8,318.90, 12,483.48 and 3,875.78 is: 5,816.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,318.90 : 12,483.48 = 3,875.78 : x
  2. Step 2: Convert to fraction form
    8,318.90/12,483.48 = 3,875.78/x
  3. Step 3: Cross multiply
    8,318.90x = 12,483.48 × 3,875.78
  4. Step 4: Simplify right side
    8,318.90x = 48,383,222.11
  5. Step 5: Solve for x
    x = 48,383,222.11/8,318.90
  6. Step 6: Final answer
    x = 5,816.06

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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.