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Finding the Fourth Proportional to 1,581.10, 2,371.64 and 887.77

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Solution

The fourth proportional to 1,581.10, 2,371.64 and 887.77 is: 1,331.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,581.10 : 2,371.64 = 887.77 : x
  2. Step 2: Convert to fraction form
    1,581.10/2,371.64 = 887.77/x
  3. Step 3: Cross multiply
    1,581.10x = 2,371.64 × 887.77
  4. Step 4: Simplify right side
    1,581.10x = 2,105,460.47
  5. Step 5: Solve for x
    x = 2,105,460.47/1,581.10
  6. Step 6: Final answer
    x = 1,331.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.