Home / 2,842.56-3,924.67-1,780.77

Finding the Fourth Proportional to 2,842.56, 3,924.67 and 1,780.77

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Solution

The fourth proportional to 2,842.56, 3,924.67 and 1,780.77 is: 2,458.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,842.56 : 3,924.67 = 1,780.77 : x
  2. Step 2: Convert to fraction form
    2,842.56/3,924.67 = 1,780.77/x
  3. Step 3: Cross multiply
    2,842.56x = 3,924.67 × 1,780.77
  4. Step 4: Simplify right side
    2,842.56x = 6,988,910.52
  5. Step 5: Solve for x
    x = 6,988,910.52/2,842.56
  6. Step 6: Final answer
    x = 2,458.67

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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.