Home / 2,900.85-4,001.69-1,836.83

Finding the Fourth Proportional to 2,900.85, 4,001.69 and 1,836.83

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Solution

The fourth proportional to 2,900.85, 4,001.69 and 1,836.83 is: 2,533.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,900.85 : 4,001.69 = 1,836.83 : x
  2. Step 2: Convert to fraction form
    2,900.85/4,001.69 = 1,836.83/x
  3. Step 3: Cross multiply
    2,900.85x = 4,001.69 × 1,836.83
  4. Step 4: Simplify right side
    2,900.85x = 7,350,395.05
  5. Step 5: Solve for x
    x = 7,350,395.05/2,900.85
  6. Step 6: Final answer
    x = 2,533.88

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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.