Home / 2,631.68-3,628.35-2,157.86

Finding the Fourth Proportional to 2,631.68, 3,628.35 and 2,157.86

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Solution

The fourth proportional to 2,631.68, 3,628.35 and 2,157.86 is: 2,975.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,631.68 : 3,628.35 = 2,157.86 : x
  2. Step 2: Convert to fraction form
    2,631.68/3,628.35 = 2,157.86/x
  3. Step 3: Cross multiply
    2,631.68x = 3,628.35 × 2,157.86
  4. Step 4: Simplify right side
    2,631.68x = 7,829,471.33
  5. Step 5: Solve for x
    x = 7,829,471.33/2,631.68
  6. Step 6: Final answer
    x = 2,975.08

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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.