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Finding the Fourth Proportional to 1,471.42, 2,030.40 and 881.94

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Solution

The fourth proportional to 1,471.42, 2,030.40 and 881.94 is: 1,216.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,471.42 : 2,030.40 = 881.94 : x
  2. Step 2: Convert to fraction form
    1,471.42/2,030.40 = 881.94/x
  3. Step 3: Cross multiply
    1,471.42x = 2,030.40 × 881.94
  4. Step 4: Simplify right side
    1,471.42x = 1,790,690.98
  5. Step 5: Solve for x
    x = 1,790,690.98/1,471.42
  6. Step 6: Final answer
    x = 1,216.98

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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.