Home / 3,990.04-5,980.74-2,604.40

Finding the Fourth Proportional to 3,990.04, 5,980.74 and 2,604.40

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Solution

The fourth proportional to 3,990.04, 5,980.74 and 2,604.40 is: 3,903.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,990.04 : 5,980.74 = 2,604.40 : x
  2. Step 2: Convert to fraction form
    3,990.04/5,980.74 = 2,604.40/x
  3. Step 3: Cross multiply
    3,990.04x = 5,980.74 × 2,604.40
  4. Step 4: Simplify right side
    3,990.04x = 15,576,239.26
  5. Step 5: Solve for x
    x = 15,576,239.26/3,990.04
  6. Step 6: Final answer
    x = 3,903.78

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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.