Home / 1,917.51-2,877.69-1,425.06

Finding the Fourth Proportional to 1,917.51, 2,877.69 and 1,425.06

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Solution

The fourth proportional to 1,917.51, 2,877.69 and 1,425.06 is: 2,138.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,917.51 : 2,877.69 = 1,425.06 : x
  2. Step 2: Convert to fraction form
    1,917.51/2,877.69 = 1,425.06/x
  3. Step 3: Cross multiply
    1,917.51x = 2,877.69 × 1,425.06
  4. Step 4: Simplify right side
    1,917.51x = 4,100,880.91
  5. Step 5: Solve for x
    x = 4,100,880.91/1,917.51
  6. Step 6: Final answer
    x = 2,138.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.