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Finding the Fourth Proportional to 1,402.51, 1,935.41 and 835.39

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Solution

The fourth proportional to 1,402.51, 1,935.41 and 835.39 is: 1,152.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,402.51 : 1,935.41 = 835.39 : x
  2. Step 2: Convert to fraction form
    1,402.51/1,935.41 = 835.39/x
  3. Step 3: Cross multiply
    1,402.51x = 1,935.41 × 835.39
  4. Step 4: Simplify right side
    1,402.51x = 1,616,814.57
  5. Step 5: Solve for x
    x = 1,616,814.57/1,402.51
  6. Step 6: Final answer
    x = 1,152.80

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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.