Home / 3,200.80-4,417.60-1,874.40

Finding the Fourth Proportional to 3,200.80, 4,417.60 and 1,874.40

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Solution

The fourth proportional to 3,200.80, 4,417.60 and 1,874.40 is: 2,586.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,200.80 : 4,417.60 = 1,874.40 : x
  2. Step 2: Convert to fraction form
    3,200.80/4,417.60 = 1,874.40/x
  3. Step 3: Cross multiply
    3,200.80x = 4,417.60 × 1,874.40
  4. Step 4: Simplify right side
    3,200.80x = 8,280,349.44
  5. Step 5: Solve for x
    x = 8,280,349.44/3,200.80
  6. Step 6: Final answer
    x = 2,586.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.