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Finding the Fourth Proportional to 1,897, 2,618.58 and 1,276.36

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Solution

The fourth proportional to 1,897, 2,618.58 and 1,276.36 is: 1,761.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,897 : 2,618.58 = 1,276.36 : x
  2. Step 2: Convert to fraction form
    1,897/2,618.58 = 1,276.36/x
  3. Step 3: Cross multiply
    1,897x = 2,618.58 × 1,276.36
  4. Step 4: Simplify right side
    1,897x = 3,342,250.77
  5. Step 5: Solve for x
    x = 3,342,250.77/1,897
  6. Step 6: Final answer
    x = 1,761.86

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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.