Home / 8,486.37-12,728.75-2,642.63

Finding the Fourth Proportional to 8,486.37, 12,728.75 and 2,642.63

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Solution

The fourth proportional to 8,486.37, 12,728.75 and 2,642.63 is: 3,963.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,486.37 : 12,728.75 = 2,642.63 : x
  2. Step 2: Convert to fraction form
    8,486.37/12,728.75 = 2,642.63/x
  3. Step 3: Cross multiply
    8,486.37x = 12,728.75 × 2,642.63
  4. Step 4: Simplify right side
    8,486.37x = 33,637,299.76
  5. Step 5: Solve for x
    x = 33,637,299.76/8,486.37
  6. Step 6: Final answer
    x = 3,963.69

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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.