Home / 1,539.50-2,123.30-1,362.65

Finding the Fourth Proportional to 1,539.50, 2,123.30 and 1,362.65

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Solution

The fourth proportional to 1,539.50, 2,123.30 and 1,362.65 is: 1,879.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,539.50 : 2,123.30 = 1,362.65 : x
  2. Step 2: Convert to fraction form
    1,539.50/2,123.30 = 1,362.65/x
  3. Step 3: Cross multiply
    1,539.50x = 2,123.30 × 1,362.65
  4. Step 4: Simplify right side
    1,539.50x = 2,893,307.54
  5. Step 5: Solve for x
    x = 2,893,307.54/1,539.50
  6. Step 6: Final answer
    x = 1,879.39

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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.