Home / 1,917.06-2,875.20-667.60

Finding the Fourth Proportional to 1,917.06, 2,875.20 and 667.60

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Solution

The fourth proportional to 1,917.06, 2,875.20 and 667.60 is: 1,001.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,917.06 : 2,875.20 = 667.60 : x
  2. Step 2: Convert to fraction form
    1,917.06/2,875.20 = 667.60/x
  3. Step 3: Cross multiply
    1,917.06x = 2,875.20 × 667.60
  4. Step 4: Simplify right side
    1,917.06x = 1,919,483.52
  5. Step 5: Solve for x
    x = 1,919,483.52/1,917.06
  6. Step 6: Final answer
    x = 1,001.26

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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.