Home / 3,990.65-5,505.45-2,574.03

Finding the Fourth Proportional to 3,990.65, 5,505.45 and 2,574.03

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Solution

The fourth proportional to 3,990.65, 5,505.45 and 2,574.03 is: 3,551.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,990.65 : 5,505.45 = 2,574.03 : x
  2. Step 2: Convert to fraction form
    3,990.65/5,505.45 = 2,574.03/x
  3. Step 3: Cross multiply
    3,990.65x = 5,505.45 × 2,574.03
  4. Step 4: Simplify right side
    3,990.65x = 14,171,193.46
  5. Step 5: Solve for x
    x = 14,171,193.46/3,990.65
  6. Step 6: Final answer
    x = 3,551.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.