Home / 1,356.66-2,021.40-1,211.13

Finding the Fourth Proportional to 1,356.66, 2,021.40 and 1,211.13

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Solution

The fourth proportional to 1,356.66, 2,021.40 and 1,211.13 is: 1,804.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,356.66 : 2,021.40 = 1,211.13 : x
  2. Step 2: Convert to fraction form
    1,356.66/2,021.40 = 1,211.13/x
  3. Step 3: Cross multiply
    1,356.66x = 2,021.40 × 1,211.13
  4. Step 4: Simplify right side
    1,356.66x = 2,448,178.18
  5. Step 5: Solve for x
    x = 2,448,178.18/1,356.66
  6. Step 6: Final answer
    x = 1,804.56

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.