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Finding the Fourth Proportional to 3,031.73, 4,546.68 and 840.63

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Solution

The fourth proportional to 3,031.73, 4,546.68 and 840.63 is: 1,260.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,031.73 : 4,546.68 = 840.63 : x
  2. Step 2: Convert to fraction form
    3,031.73/4,546.68 = 840.63/x
  3. Step 3: Cross multiply
    3,031.73x = 4,546.68 × 840.63
  4. Step 4: Simplify right side
    3,031.73x = 3,822,068.66
  5. Step 5: Solve for x
    x = 3,822,068.66/3,031.73
  6. Step 6: Final answer
    x = 1,260.69

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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.