Home / 3,106.84-4,287.44-1,780.82

Finding the Fourth Proportional to 3,106.84, 4,287.44 and 1,780.82

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Solution

The fourth proportional to 3,106.84, 4,287.44 and 1,780.82 is: 2,457.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,106.84 : 4,287.44 = 1,780.82 : x
  2. Step 2: Convert to fraction form
    3,106.84/4,287.44 = 1,780.82/x
  3. Step 3: Cross multiply
    3,106.84x = 4,287.44 × 1,780.82
  4. Step 4: Simplify right side
    3,106.84x = 7,635,158.90
  5. Step 5: Solve for x
    x = 7,635,158.90/3,106.84
  6. Step 6: Final answer
    x = 2,457.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.