Home / 2,900.85-4,003.12-1,574.54

Finding the Fourth Proportional to 2,900.85, 4,003.12 and 1,574.54

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Solution

The fourth proportional to 2,900.85, 4,003.12 and 1,574.54 is: 2,172.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,900.85 : 4,003.12 = 1,574.54 : x
  2. Step 2: Convert to fraction form
    2,900.85/4,003.12 = 1,574.54/x
  3. Step 3: Cross multiply
    2,900.85x = 4,003.12 × 1,574.54
  4. Step 4: Simplify right side
    2,900.85x = 6,303,072.56
  5. Step 5: Solve for x
    x = 6,303,072.56/2,900.85
  6. Step 6: Final answer
    x = 2,172.84

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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.