Home / 1,541.03-2,125.91-911.12

Finding the Fourth Proportional to 1,541.03, 2,125.91 and 911.12

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Solution

The fourth proportional to 1,541.03, 2,125.91 and 911.12 is: 1,256.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,541.03 : 2,125.91 = 911.12 : x
  2. Step 2: Convert to fraction form
    1,541.03/2,125.91 = 911.12/x
  3. Step 3: Cross multiply
    1,541.03x = 2,125.91 × 911.12
  4. Step 4: Simplify right side
    1,541.03x = 1,936,950.77
  5. Step 5: Solve for x
    x = 1,936,950.77/1,541.03
  6. Step 6: Final answer
    x = 1,256.92

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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.