Home / 2,101.87-2,900.55-1,157.73

Finding the Fourth Proportional to 2,101.87, 2,900.55 and 1,157.73

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Solution

The fourth proportional to 2,101.87, 2,900.55 and 1,157.73 is: 1,597.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,101.87 : 2,900.55 = 1,157.73 : x
  2. Step 2: Convert to fraction form
    2,101.87/2,900.55 = 1,157.73/x
  3. Step 3: Cross multiply
    2,101.87x = 2,900.55 × 1,157.73
  4. Step 4: Simplify right side
    2,101.87x = 3,358,047.22
  5. Step 5: Solve for x
    x = 3,358,047.22/2,101.87
  6. Step 6: Final answer
    x = 1,597.65

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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.