Home / 1,651.35-2,277.41-1,021.78

Finding the Fourth Proportional to 1,651.35, 2,277.41 and 1,021.78

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Solution

The fourth proportional to 1,651.35, 2,277.41 and 1,021.78 is: 1,409.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,651.35 : 2,277.41 = 1,021.78 : x
  2. Step 2: Convert to fraction form
    1,651.35/2,277.41 = 1,021.78/x
  3. Step 3: Cross multiply
    1,651.35x = 2,277.41 × 1,021.78
  4. Step 4: Simplify right side
    1,651.35x = 2,327,011.99
  5. Step 5: Solve for x
    x = 2,327,011.99/1,651.35
  6. Step 6: Final answer
    x = 1,409.16

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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.