Home / 2,900.90-4,003.13-1,574.57

Finding the Fourth Proportional to 2,900.90, 4,003.13 and 1,574.57

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Solution

The fourth proportional to 2,900.90, 4,003.13 and 1,574.57 is: 2,172.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,900.90 : 4,003.13 = 1,574.57 : x
  2. Step 2: Convert to fraction form
    2,900.90/4,003.13 = 1,574.57/x
  3. Step 3: Cross multiply
    2,900.90x = 4,003.13 × 1,574.57
  4. Step 4: Simplify right side
    2,900.90x = 6,303,208.40
  5. Step 5: Solve for x
    x = 6,303,208.40/2,900.90
  6. Step 6: Final answer
    x = 2,172.85

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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.