Home / 2,101.44-2,899.80-1,217.16

Finding the Fourth Proportional to 2,101.44, 2,899.80 and 1,217.16

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Solution

The fourth proportional to 2,101.44, 2,899.80 and 1,217.16 is: 1,679.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,101.44 : 2,899.80 = 1,217.16 : x
  2. Step 2: Convert to fraction form
    2,101.44/2,899.80 = 1,217.16/x
  3. Step 3: Cross multiply
    2,101.44x = 2,899.80 × 1,217.16
  4. Step 4: Simplify right side
    2,101.44x = 3,529,520.57
  5. Step 5: Solve for x
    x = 3,529,520.57/2,101.44
  6. Step 6: Final answer
    x = 1,679.57

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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.