Home / 2,917.07-4,025.43-1,590.78

Finding the Fourth Proportional to 2,917.07, 4,025.43 and 1,590.78

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Solution

The fourth proportional to 2,917.07, 4,025.43 and 1,590.78 is: 2,195.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,917.07 : 4,025.43 = 1,590.78 : x
  2. Step 2: Convert to fraction form
    2,917.07/4,025.43 = 1,590.78/x
  3. Step 3: Cross multiply
    2,917.07x = 4,025.43 × 1,590.78
  4. Step 4: Simplify right side
    2,917.07x = 6,403,573.54
  5. Step 5: Solve for x
    x = 6,403,573.54/2,917.07
  6. Step 6: Final answer
    x = 2,195.21

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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.