Home / 8,058.40-12,080.70-3,131.58

Finding the Fourth Proportional to 8,058.40, 12,080.70 and 3,131.58

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Solution

The fourth proportional to 8,058.40, 12,080.70 and 3,131.58 is: 4,694.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,058.40 : 12,080.70 = 3,131.58 : x
  2. Step 2: Convert to fraction form
    8,058.40/12,080.70 = 3,131.58/x
  3. Step 3: Cross multiply
    8,058.40x = 12,080.70 × 3,131.58
  4. Step 4: Simplify right side
    8,058.40x = 37,831,678.51
  5. Step 5: Solve for x
    x = 37,831,678.51/8,058.40
  6. Step 6: Final answer
    x = 4,694.69

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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.