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Finding the Fourth Proportional to 1,818.63, 2,509.71 and 1,032.66

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Solution

The fourth proportional to 1,818.63, 2,509.71 and 1,032.66 is: 1,425.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,818.63 : 2,509.71 = 1,032.66 : x
  2. Step 2: Convert to fraction form
    1,818.63/2,509.71 = 1,032.66/x
  3. Step 3: Cross multiply
    1,818.63x = 2,509.71 × 1,032.66
  4. Step 4: Simplify right side
    1,818.63x = 2,591,677.13
  5. Step 5: Solve for x
    x = 2,591,677.13/1,818.63
  6. Step 6: Final answer
    x = 1,425.07

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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.