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Finding the Fourth Proportional to 2,427.77, 3,640.76 and 867.36

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Solution

The fourth proportional to 2,427.77, 3,640.76 and 867.36 is: 1,300.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,427.77 : 3,640.76 = 867.36 : x
  2. Step 2: Convert to fraction form
    2,427.77/3,640.76 = 867.36/x
  3. Step 3: Cross multiply
    2,427.77x = 3,640.76 × 867.36
  4. Step 4: Simplify right side
    2,427.77x = 3,157,849.59
  5. Step 5: Solve for x
    x = 3,157,849.59/2,427.77
  6. Step 6: Final answer
    x = 1,300.72

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1.5x scale

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.