Home / 2,900.20-4,004.30-2,561.52

Finding the Fourth Proportional to 2,900.20, 4,004.30 and 2,561.52

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Solution

The fourth proportional to 2,900.20, 4,004.30 and 2,561.52 is: 3,536.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,900.20 : 4,004.30 = 2,561.52 : x
  2. Step 2: Convert to fraction form
    2,900.20/4,004.30 = 2,561.52/x
  3. Step 3: Cross multiply
    2,900.20x = 4,004.30 × 2,561.52
  4. Step 4: Simplify right side
    2,900.20x = 10,257,094.54
  5. Step 5: Solve for x
    x = 10,257,094.54/2,900.20
  6. Step 6: Final answer
    x = 3,536.69

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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.