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Finding the Fourth Proportional to 1,541.44, 2,127.19 and 842.81

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Solution

The fourth proportional to 1,541.44, 2,127.19 and 842.81 is: 1,163.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,541.44 : 2,127.19 = 842.81 : x
  2. Step 2: Convert to fraction form
    1,541.44/2,127.19 = 842.81/x
  3. Step 3: Cross multiply
    1,541.44x = 2,127.19 × 842.81
  4. Step 4: Simplify right side
    1,541.44x = 1,792,820.21
  5. Step 5: Solve for x
    x = 1,792,820.21/1,541.44
  6. Step 6: Final answer
    x = 1,163.08

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1.5x scale

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.