Home / 2,157.39-2,977.14-1,213.23

Finding the Fourth Proportional to 2,157.39, 2,977.14 and 1,213.23

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Solution

The fourth proportional to 2,157.39, 2,977.14 and 1,213.23 is: 1,674.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,157.39 : 2,977.14 = 1,213.23 : x
  2. Step 2: Convert to fraction form
    2,157.39/2,977.14 = 1,213.23/x
  3. Step 3: Cross multiply
    2,157.39x = 2,977.14 × 1,213.23
  4. Step 4: Simplify right side
    2,157.39x = 3,611,955.56
  5. Step 5: Solve for x
    x = 3,611,955.56/2,157.39
  6. Step 6: Final answer
    x = 1,674.22

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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.