Home / 3,214.40-4,821.60-3,118.40

Finding the Fourth Proportional to 3,214.40, 4,821.60 and 3,118.40

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Solution

The fourth proportional to 3,214.40, 4,821.60 and 3,118.40 is: 4,677.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,214.40 : 4,821.60 = 3,118.40 : x
  2. Step 2: Convert to fraction form
    3,214.40/4,821.60 = 3,118.40/x
  3. Step 3: Cross multiply
    3,214.40x = 4,821.60 × 3,118.40
  4. Step 4: Simplify right side
    3,214.40x = 15,035,677.44
  5. Step 5: Solve for x
    x = 15,035,677.44/3,214.40
  6. Step 6: Final answer
    x = 4,677.60

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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.