Home / 3,290.40-4,935.60-2,059.20

Finding the Fourth Proportional to 3,290.40, 4,935.60 and 2,059.20

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Solution

The fourth proportional to 3,290.40, 4,935.60 and 2,059.20 is: 3,088.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,290.40 : 4,935.60 = 2,059.20 : x
  2. Step 2: Convert to fraction form
    3,290.40/4,935.60 = 2,059.20/x
  3. Step 3: Cross multiply
    3,290.40x = 4,935.60 × 2,059.20
  4. Step 4: Simplify right side
    3,290.40x = 10,163,387.52
  5. Step 5: Solve for x
    x = 10,163,387.52/3,290.40
  6. Step 6: Final answer
    x = 3,088.80

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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.