Home / 2,802.60-3,867.30-2,020.68

Finding the Fourth Proportional to 2,802.60, 3,867.30 and 2,020.68

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Solution

The fourth proportional to 2,802.60, 3,867.30 and 2,020.68 is: 2,788.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,802.60 : 3,867.30 = 2,020.68 : x
  2. Step 2: Convert to fraction form
    2,802.60/3,867.30 = 2,020.68/x
  3. Step 3: Cross multiply
    2,802.60x = 3,867.30 × 2,020.68
  4. Step 4: Simplify right side
    2,802.60x = 7,814,575.76
  5. Step 5: Solve for x
    x = 7,814,575.76/2,802.60
  6. Step 6: Final answer
    x = 2,788.33

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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.