Home / 2,764.60-3,815.20-1,585.68

Finding the Fourth Proportional to 2,764.60, 3,815.20 and 1,585.68

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Solution

The fourth proportional to 2,764.60, 3,815.20 and 1,585.68 is: 2,188.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,764.60 : 3,815.20 = 1,585.68 : x
  2. Step 2: Convert to fraction form
    2,764.60/3,815.20 = 1,585.68/x
  3. Step 3: Cross multiply
    2,764.60x = 3,815.20 × 1,585.68
  4. Step 4: Simplify right side
    2,764.60x = 6,049,686.34
  5. Step 5: Solve for x
    x = 6,049,686.34/2,764.60
  6. Step 6: Final answer
    x = 2,188.27

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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.