Home / 2,135.15-2,946.47-1,191

Finding the Fourth Proportional to 2,135.15, 2,946.47 and 1,191

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Solution

The fourth proportional to 2,135.15, 2,946.47 and 1,191 is: 1,643.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,135.15 : 2,946.47 = 1,191 : x
  2. Step 2: Convert to fraction form
    2,135.15/2,946.47 = 1,191/x
  3. Step 3: Cross multiply
    2,135.15x = 2,946.47 × 1,191
  4. Step 4: Simplify right side
    2,135.15x = 3,509,239.82
  5. Step 5: Solve for x
    x = 3,509,239.82/2,135.15
  6. Step 6: Final answer
    x = 1,643.56

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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.