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Finding the Fourth Proportional to 1,897.04, 2,617.92 and 1,069.04

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Solution

The fourth proportional to 1,897.04, 2,617.92 and 1,069.04 is: 1,475.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,897.04 : 2,617.92 = 1,069.04 : x
  2. Step 2: Convert to fraction form
    1,897.04/2,617.92 = 1,069.04/x
  3. Step 3: Cross multiply
    1,897.04x = 2,617.92 × 1,069.04
  4. Step 4: Simplify right side
    1,897.04x = 2,798,661.20
  5. Step 5: Solve for x
    x = 2,798,661.20/1,897.04
  6. Step 6: Final answer
    x = 1,475.28

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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.