Home / 3,106.89-4,287.29-1,780.56

Finding the Fourth Proportional to 3,106.89, 4,287.29 and 1,780.56

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Solution

The fourth proportional to 3,106.89, 4,287.29 and 1,780.56 is: 2,457.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,106.89 : 4,287.29 = 1,780.56 : x
  2. Step 2: Convert to fraction form
    3,106.89/4,287.29 = 1,780.56/x
  3. Step 3: Cross multiply
    3,106.89x = 4,287.29 × 1,780.56
  4. Step 4: Simplify right side
    3,106.89x = 7,633,768.18
  5. Step 5: Solve for x
    x = 7,633,768.18/3,106.89
  6. Step 6: Final answer
    x = 2,457.04

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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.