Home / 3,031.30-4,546.98-840.16

Finding the Fourth Proportional to 3,031.30, 4,546.98 and 840.16

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Solution

The fourth proportional to 3,031.30, 4,546.98 and 840.16 is: 1,260.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,031.30 : 4,546.98 = 840.16 : x
  2. Step 2: Convert to fraction form
    3,031.30/4,546.98 = 840.16/x
  3. Step 3: Cross multiply
    3,031.30x = 4,546.98 × 840.16
  4. Step 4: Simplify right side
    3,031.30x = 3,820,190.72
  5. Step 5: Solve for x
    x = 3,820,190.72/3,031.30
  6. Step 6: Final answer
    x = 1,260.25

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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.