Home / 2,157.39-3,236.13-696.69

Finding the Fourth Proportional to 2,157.39, 3,236.13 and 696.69

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Solution

The fourth proportional to 2,157.39, 3,236.13 and 696.69 is: 1,045.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,157.39 : 3,236.13 = 696.69 : x
  2. Step 2: Convert to fraction form
    2,157.39/3,236.13 = 696.69/x
  3. Step 3: Cross multiply
    2,157.39x = 3,236.13 × 696.69
  4. Step 4: Simplify right side
    2,157.39x = 2,254,579.41
  5. Step 5: Solve for x
    x = 2,254,579.41/2,157.39
  6. Step 6: Final answer
    x = 1,045.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.