Home / 1,316.30-1,983.24-1,191.38

Finding the Fourth Proportional to 1,316.30, 1,983.24 and 1,191.38

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Solution

The fourth proportional to 1,316.30, 1,983.24 and 1,191.38 is: 1,795.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,316.30 : 1,983.24 = 1,191.38 : x
  2. Step 2: Convert to fraction form
    1,316.30/1,983.24 = 1,191.38/x
  3. Step 3: Cross multiply
    1,316.30x = 1,983.24 × 1,191.38
  4. Step 4: Simplify right side
    1,316.30x = 2,362,782.56
  5. Step 5: Solve for x
    x = 2,362,782.56/1,316.30
  6. Step 6: Final answer
    x = 1,795.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.