Home / 1,917.51-2,875.58-667.96

Finding the Fourth Proportional to 1,917.51, 2,875.58 and 667.96

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Solution

The fourth proportional to 1,917.51, 2,875.58 and 667.96 is: 1,001.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,917.51 : 2,875.58 = 667.96 : x
  2. Step 2: Convert to fraction form
    1,917.51/2,875.58 = 667.96/x
  3. Step 3: Cross multiply
    1,917.51x = 2,875.58 × 667.96
  4. Step 4: Simplify right side
    1,917.51x = 1,920,772.42
  5. Step 5: Solve for x
    x = 1,920,772.42/1,917.51
  6. Step 6: Final answer
    x = 1,001.70

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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.