Home / 1,641.90-2,265.78-943.26

Finding the Fourth Proportional to 1,641.90, 2,265.78 and 943.26

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Solution

The fourth proportional to 1,641.90, 2,265.78 and 943.26 is: 1,301.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,641.90 : 2,265.78 = 943.26 : x
  2. Step 2: Convert to fraction form
    1,641.90/2,265.78 = 943.26/x
  3. Step 3: Cross multiply
    1,641.90x = 2,265.78 × 943.26
  4. Step 4: Simplify right side
    1,641.90x = 2,137,219.64
  5. Step 5: Solve for x
    x = 2,137,219.64/1,641.90
  6. Step 6: Final answer
    x = 1,301.67

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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.