Home / 3,153.80-4,730.70-2,813.60

Finding the Fourth Proportional to 3,153.80, 4,730.70 and 2,813.60

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Solution

The fourth proportional to 3,153.80, 4,730.70 and 2,813.60 is: 4,220.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,153.80 : 4,730.70 = 2,813.60 : x
  2. Step 2: Convert to fraction form
    3,153.80/4,730.70 = 2,813.60/x
  3. Step 3: Cross multiply
    3,153.80x = 4,730.70 × 2,813.60
  4. Step 4: Simplify right side
    3,153.80x = 13,310,297.52
  5. Step 5: Solve for x
    x = 13,310,297.52/3,153.80
  6. Step 6: Final answer
    x = 4,220.40

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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.