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Finding the Fourth Proportional to 1,369.13, 1,889.39 and 846.07

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Solution

The fourth proportional to 1,369.13, 1,889.39 and 846.07 is: 1,167.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,369.13 : 1,889.39 = 846.07 : x
  2. Step 2: Convert to fraction form
    1,369.13/1,889.39 = 846.07/x
  3. Step 3: Cross multiply
    1,369.13x = 1,889.39 × 846.07
  4. Step 4: Simplify right side
    1,369.13x = 1,598,553.59
  5. Step 5: Solve for x
    x = 1,598,553.59/1,369.13
  6. Step 6: Final answer
    x = 1,167.57

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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.