Home / 2,157.99-2,977.77-1,213.59

Finding the Fourth Proportional to 2,157.99, 2,977.77 and 1,213.59

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Solution

The fourth proportional to 2,157.99, 2,977.77 and 1,213.59 is: 1,674.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,157.99 : 2,977.77 = 1,213.59 : x
  2. Step 2: Convert to fraction form
    2,157.99/2,977.77 = 1,213.59/x
  3. Step 3: Cross multiply
    2,157.99x = 2,977.77 × 1,213.59
  4. Step 4: Simplify right side
    2,157.99x = 3,613,791.89
  5. Step 5: Solve for x
    x = 3,613,791.89/2,157.99
  6. Step 6: Final answer
    x = 1,674.61

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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.