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Finding the Fourth Proportional to 1,897.80, 2,619.65 and 1,300.63

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Solution

The fourth proportional to 1,897.80, 2,619.65 and 1,300.63 is: 1,795.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,897.80 : 2,619.65 = 1,300.63 : x
  2. Step 2: Convert to fraction form
    1,897.80/2,619.65 = 1,300.63/x
  3. Step 3: Cross multiply
    1,897.80x = 2,619.65 × 1,300.63
  4. Step 4: Simplify right side
    1,897.80x = 3,407,195.38
  5. Step 5: Solve for x
    x = 3,407,195.38/1,897.80
  6. Step 6: Final answer
    x = 1,795.34

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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.