Home / 1,539.03-2,123.79-941.40

Finding the Fourth Proportional to 1,539.03, 2,123.79 and 941.40

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Solution

The fourth proportional to 1,539.03, 2,123.79 and 941.40 is: 1,299.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,539.03 : 2,123.79 = 941.40 : x
  2. Step 2: Convert to fraction form
    1,539.03/2,123.79 = 941.40/x
  3. Step 3: Cross multiply
    1,539.03x = 2,123.79 × 941.40
  4. Step 4: Simplify right side
    1,539.03x = 1,999,335.91
  5. Step 5: Solve for x
    x = 1,999,335.91/1,539.03
  6. Step 6: Final answer
    x = 1,299.09

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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.