Home / 3,320.40-4,980.60-3,298.80

Finding the Fourth Proportional to 3,320.40, 4,980.60 and 3,298.80

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Solution

The fourth proportional to 3,320.40, 4,980.60 and 3,298.80 is: 4,948.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,320.40 : 4,980.60 = 3,298.80 : x
  2. Step 2: Convert to fraction form
    3,320.40/4,980.60 = 3,298.80/x
  3. Step 3: Cross multiply
    3,320.40x = 4,980.60 × 3,298.80
  4. Step 4: Simplify right side
    3,320.40x = 16,430,003.28
  5. Step 5: Solve for x
    x = 16,430,003.28/3,320.40
  6. Step 6: Final answer
    x = 4,948.20

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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.