Home / 3,220.71-4,827.83-1,271.45

Finding the Fourth Proportional to 3,220.71, 4,827.83 and 1,271.45

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Solution

The fourth proportional to 3,220.71, 4,827.83 and 1,271.45 is: 1,905.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,220.71 : 4,827.83 = 1,271.45 : x
  2. Step 2: Convert to fraction form
    3,220.71/4,827.83 = 1,271.45/x
  3. Step 3: Cross multiply
    3,220.71x = 4,827.83 × 1,271.45
  4. Step 4: Simplify right side
    3,220.71x = 6,138,313.96
  5. Step 5: Solve for x
    x = 6,138,313.96/3,220.71
  6. Step 6: Final answer
    x = 1,905.89

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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.