Home / 2,917.02-4,026.98-1,977.78

Finding the Fourth Proportional to 2,917.02, 4,026.98 and 1,977.78

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Solution

The fourth proportional to 2,917.02, 4,026.98 and 1,977.78 is: 2,730.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,917.02 : 4,026.98 = 1,977.78 : x
  2. Step 2: Convert to fraction form
    2,917.02/4,026.98 = 1,977.78/x
  3. Step 3: Cross multiply
    2,917.02x = 4,026.98 × 1,977.78
  4. Step 4: Simplify right side
    2,917.02x = 7,964,480.50
  5. Step 5: Solve for x
    x = 7,964,480.50/2,917.02
  6. Step 6: Final answer
    x = 2,730.35

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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.