Home / 1,533.34-2,115.50-861.04

Finding the Fourth Proportional to 1,533.34, 2,115.50 and 861.04

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Solution

The fourth proportional to 1,533.34, 2,115.50 and 861.04 is: 1,187.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,533.34 : 2,115.50 = 861.04 : x
  2. Step 2: Convert to fraction form
    1,533.34/2,115.50 = 861.04/x
  3. Step 3: Cross multiply
    1,533.34x = 2,115.50 × 861.04
  4. Step 4: Simplify right side
    1,533.34x = 1,821,530.12
  5. Step 5: Solve for x
    x = 1,821,530.12/1,533.34
  6. Step 6: Final answer
    x = 1,187.95

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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.