Home / 1,931.03-2,664.98-1,091.78

Finding the Fourth Proportional to 1,931.03, 2,664.98 and 1,091.78

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Solution

The fourth proportional to 1,931.03, 2,664.98 and 1,091.78 is: 1,506.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,931.03 : 2,664.98 = 1,091.78 : x
  2. Step 2: Convert to fraction form
    1,931.03/2,664.98 = 1,091.78/x
  3. Step 3: Cross multiply
    1,931.03x = 2,664.98 × 1,091.78
  4. Step 4: Simplify right side
    1,931.03x = 2,909,553.08
  5. Step 5: Solve for x
    x = 2,909,553.08/1,931.03
  6. Step 6: Final answer
    x = 1,506.74

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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.