Home / 3,186.40-4,774.20-2,635.60

Finding the Fourth Proportional to 3,186.40, 4,774.20 and 2,635.60

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Solution

The fourth proportional to 3,186.40, 4,774.20 and 2,635.60 is: 3,948.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,186.40 : 4,774.20 = 2,635.60 : x
  2. Step 2: Convert to fraction form
    3,186.40/4,774.20 = 2,635.60/x
  3. Step 3: Cross multiply
    3,186.40x = 4,774.20 × 2,635.60
  4. Step 4: Simplify right side
    3,186.40x = 12,582,881.52
  5. Step 5: Solve for x
    x = 12,582,881.52/3,186.40
  6. Step 6: Final answer
    x = 3,948.93

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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.