Home / 8,284.90-12,431.40-3,901.60

Finding the Fourth Proportional to 8,284.90, 12,431.40 and 3,901.60

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Solution

The fourth proportional to 8,284.90, 12,431.40 and 3,901.60 is: 5,854.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,284.90 : 12,431.40 = 3,901.60 : x
  2. Step 2: Convert to fraction form
    8,284.90/12,431.40 = 3,901.60/x
  3. Step 3: Cross multiply
    8,284.90x = 12,431.40 × 3,901.60
  4. Step 4: Simplify right side
    8,284.90x = 48,502,350.24
  5. Step 5: Solve for x
    x = 48,502,350.24/8,284.90
  6. Step 6: Final answer
    x = 5,854.31

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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.