Home / 2,101.66-2,900.26-1,157.43

Finding the Fourth Proportional to 2,101.66, 2,900.26 and 1,157.43

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Solution

The fourth proportional to 2,101.66, 2,900.26 and 1,157.43 is: 1,597.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,101.66 : 2,900.26 = 1,157.43 : x
  2. Step 2: Convert to fraction form
    2,101.66/2,900.26 = 1,157.43/x
  3. Step 3: Cross multiply
    2,101.66x = 2,900.26 × 1,157.43
  4. Step 4: Simplify right side
    2,101.66x = 3,356,837.79
  5. Step 5: Solve for x
    x = 3,356,837.79/2,101.66
  6. Step 6: Final answer
    x = 1,597.24

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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.