Home / 2,119.26-2,921.33-1,670.29

Finding the Fourth Proportional to 2,119.26, 2,921.33 and 1,670.29

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Solution

The fourth proportional to 2,119.26, 2,921.33 and 1,670.29 is: 2,302.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,119.26 : 2,921.33 = 1,670.29 : x
  2. Step 2: Convert to fraction form
    2,119.26/2,921.33 = 1,670.29/x
  3. Step 3: Cross multiply
    2,119.26x = 2,921.33 × 1,670.29
  4. Step 4: Simplify right side
    2,119.26x = 4,879,465.16
  5. Step 5: Solve for x
    x = 4,879,465.16/2,119.26
  6. Step 6: Final answer
    x = 2,302.43

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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.