Home / 1,500.85-2,071.25-911.04

Finding the Fourth Proportional to 1,500.85, 2,071.25 and 911.04

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Solution

The fourth proportional to 1,500.85, 2,071.25 and 911.04 is: 1,257.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,500.85 : 2,071.25 = 911.04 : x
  2. Step 2: Convert to fraction form
    1,500.85/2,071.25 = 911.04/x
  3. Step 3: Cross multiply
    1,500.85x = 2,071.25 × 911.04
  4. Step 4: Simplify right side
    1,500.85x = 1,886,991.60
  5. Step 5: Solve for x
    x = 1,886,991.60/1,500.85
  6. Step 6: Final answer
    x = 1,257.28

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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.