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Finding the Fourth Proportional to 3,389.97, 4,678.33 and 1,897.79

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Solution

The fourth proportional to 3,389.97, 4,678.33 and 1,897.79 is: 2,619.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,389.97 : 4,678.33 = 1,897.79 : x
  2. Step 2: Convert to fraction form
    3,389.97/4,678.33 = 1,897.79/x
  3. Step 3: Cross multiply
    3,389.97x = 4,678.33 × 1,897.79
  4. Step 4: Simplify right side
    3,389.97x = 8,878,507.17
  5. Step 5: Solve for x
    x = 8,878,507.17/3,389.97
  6. Step 6: Final answer
    x = 2,619.05

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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.