Home / 8,239.64-12,355.50-3,853.40

Finding the Fourth Proportional to 8,239.64, 12,355.50 and 3,853.40

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Solution

The fourth proportional to 8,239.64, 12,355.50 and 3,853.40 is: 5,778.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,239.64 : 12,355.50 = 3,853.40 : x
  2. Step 2: Convert to fraction form
    8,239.64/12,355.50 = 3,853.40/x
  3. Step 3: Cross multiply
    8,239.64x = 12,355.50 × 3,853.40
  4. Step 4: Simplify right side
    8,239.64x = 47,610,683.70
  5. Step 5: Solve for x
    x = 47,610,683.70/8,239.64
  6. Step 6: Final answer
    x = 5,778.25

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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.