Home / 2,119.31-2,923.80-1,322.16

Finding the Fourth Proportional to 2,119.31, 2,923.80 and 1,322.16

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Solution

The fourth proportional to 2,119.31, 2,923.80 and 1,322.16 is: 1,824.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,119.31 : 2,923.80 = 1,322.16 : x
  2. Step 2: Convert to fraction form
    2,119.31/2,923.80 = 1,322.16/x
  3. Step 3: Cross multiply
    2,119.31x = 2,923.80 × 1,322.16
  4. Step 4: Simplify right side
    2,119.31x = 3,865,731.41
  5. Step 5: Solve for x
    x = 3,865,731.41/2,119.31
  6. Step 6: Final answer
    x = 1,824.05

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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.