Home / 2,278.08-3,131.64-2,263.68

Finding the Fourth Proportional to 2,278.08, 3,131.64 and 2,263.68

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Solution

The fourth proportional to 2,278.08, 3,131.64 and 2,263.68 is: 3,111.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,278.08 : 3,131.64 = 2,263.68 : x
  2. Step 2: Convert to fraction form
    2,278.08/3,131.64 = 2,263.68/x
  3. Step 3: Cross multiply
    2,278.08x = 3,131.64 × 2,263.68
  4. Step 4: Simplify right side
    2,278.08x = 7,089,030.84
  5. Step 5: Solve for x
    x = 7,089,030.84/2,278.08
  6. Step 6: Final answer
    x = 3,111.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.