Home / 2,900.31-4,002.45-1,641.69

Finding the Fourth Proportional to 2,900.31, 4,002.45 and 1,641.69

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Solution

The fourth proportional to 2,900.31, 4,002.45 and 1,641.69 is: 2,265.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,900.31 : 4,002.45 = 1,641.69 : x
  2. Step 2: Convert to fraction form
    2,900.31/4,002.45 = 1,641.69/x
  3. Step 3: Cross multiply
    2,900.31x = 4,002.45 × 1,641.69
  4. Step 4: Simplify right side
    2,900.31x = 6,570,782.14
  5. Step 5: Solve for x
    x = 6,570,782.14/2,900.31
  6. Step 6: Final answer
    x = 2,265.54

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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.