Home / 3,212.40-4,818.60-2,155.35

Finding the Fourth Proportional to 3,212.40, 4,818.60 and 2,155.35

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Solution

The fourth proportional to 3,212.40, 4,818.60 and 2,155.35 is: 3,233.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,212.40 : 4,818.60 = 2,155.35 : x
  2. Step 2: Convert to fraction form
    3,212.40/4,818.60 = 2,155.35/x
  3. Step 3: Cross multiply
    3,212.40x = 4,818.60 × 2,155.35
  4. Step 4: Simplify right side
    3,212.40x = 10,385,769.51
  5. Step 5: Solve for x
    x = 10,385,769.51/3,212.40
  6. Step 6: Final answer
    x = 3,233.03

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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.