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Finding the Fourth Proportional to 1,372.46, 1,894.35 and 841.52

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Solution

The fourth proportional to 1,372.46, 1,894.35 and 841.52 is: 1,161.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,372.46 : 1,894.35 = 841.52 : x
  2. Step 2: Convert to fraction form
    1,372.46/1,894.35 = 841.52/x
  3. Step 3: Cross multiply
    1,372.46x = 1,894.35 × 841.52
  4. Step 4: Simplify right side
    1,372.46x = 1,594,133.41
  5. Step 5: Solve for x
    x = 1,594,133.41/1,372.46
  6. Step 6: Final answer
    x = 1,161.52

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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.