Home / 1,945.59-2,918.90-1,020.89

Finding the Fourth Proportional to 1,945.59, 2,918.90 and 1,020.89

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Solution

The fourth proportional to 1,945.59, 2,918.90 and 1,020.89 is: 1,531.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,945.59 : 2,918.90 = 1,020.89 : x
  2. Step 2: Convert to fraction form
    1,945.59/2,918.90 = 1,020.89/x
  3. Step 3: Cross multiply
    1,945.59x = 2,918.90 × 1,020.89
  4. Step 4: Simplify right side
    1,945.59x = 2,979,875.82
  5. Step 5: Solve for x
    x = 2,979,875.82/1,945.59
  6. Step 6: Final answer
    x = 1,531.61

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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.