Home / 1,539.10-2,123.75-866.95

Finding the Fourth Proportional to 1,539.10, 2,123.75 and 866.95

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Solution

The fourth proportional to 1,539.10, 2,123.75 and 866.95 is: 1,196.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,539.10 : 2,123.75 = 866.95 : x
  2. Step 2: Convert to fraction form
    1,539.10/2,123.75 = 866.95/x
  3. Step 3: Cross multiply
    1,539.10x = 2,123.75 × 866.95
  4. Step 4: Simplify right side
    1,539.10x = 1,841,181.92
  5. Step 5: Solve for x
    x = 1,841,181.92/1,539.10
  6. Step 6: Final answer
    x = 1,196.27

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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.