Home / 1,771.96-2,446.32-1,378.12

Finding the Fourth Proportional to 1,771.96, 2,446.32 and 1,378.12

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Solution

The fourth proportional to 1,771.96, 2,446.32 and 1,378.12 is: 1,902.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,771.96 : 2,446.32 = 1,378.12 : x
  2. Step 2: Convert to fraction form
    1,771.96/2,446.32 = 1,378.12/x
  3. Step 3: Cross multiply
    1,771.96x = 2,446.32 × 1,378.12
  4. Step 4: Simplify right side
    1,771.96x = 3,371,322.52
  5. Step 5: Solve for x
    x = 3,371,322.52/1,771.96
  6. Step 6: Final answer
    x = 1,902.60

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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.