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Finding the Fourth Proportional to 1,893.54, 2,836.20 and 917.59

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Solution

The fourth proportional to 1,893.54, 2,836.20 and 917.59 is: 1,374.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,893.54 : 2,836.20 = 917.59 : x
  2. Step 2: Convert to fraction form
    1,893.54/2,836.20 = 917.59/x
  3. Step 3: Cross multiply
    1,893.54x = 2,836.20 × 917.59
  4. Step 4: Simplify right side
    1,893.54x = 2,602,468.76
  5. Step 5: Solve for x
    x = 2,602,468.76/1,893.54
  6. Step 6: Final answer
    x = 1,374.39

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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.