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Finding the Fourth Proportional to 2,838.94, 3,917.95 and 1,580.22

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Solution

The fourth proportional to 2,838.94, 3,917.95 and 1,580.22 is: 2,180.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,838.94 : 3,917.95 = 1,580.22 : x
  2. Step 2: Convert to fraction form
    2,838.94/3,917.95 = 1,580.22/x
  3. Step 3: Cross multiply
    2,838.94x = 3,917.95 × 1,580.22
  4. Step 4: Simplify right side
    2,838.94x = 6,191,222.95
  5. Step 5: Solve for x
    x = 6,191,222.95/2,838.94
  6. Step 6: Final answer
    x = 2,180.82

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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.