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Finding the Fourth Proportional to 1,881.63, 2,823.12 and 841.55

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Solution

The fourth proportional to 1,881.63, 2,823.12 and 841.55 is: 1,262.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,881.63 : 2,823.12 = 841.55 : x
  2. Step 2: Convert to fraction form
    1,881.63/2,823.12 = 841.55/x
  3. Step 3: Cross multiply
    1,881.63x = 2,823.12 × 841.55
  4. Step 4: Simplify right side
    1,881.63x = 2,375,796.64
  5. Step 5: Solve for x
    x = 2,375,796.64/1,881.63
  6. Step 6: Final answer
    x = 1,262.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.