Home / 2,153.70-2,971.08-1,356.66

Finding the Fourth Proportional to 2,153.70, 2,971.08 and 1,356.66

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Solution

The fourth proportional to 2,153.70, 2,971.08 and 1,356.66 is: 1,871.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,153.70 : 2,971.08 = 1,356.66 : x
  2. Step 2: Convert to fraction form
    2,153.70/2,971.08 = 1,356.66/x
  3. Step 3: Cross multiply
    2,153.70x = 2,971.08 × 1,356.66
  4. Step 4: Simplify right side
    2,153.70x = 4,030,745.39
  5. Step 5: Solve for x
    x = 4,030,745.39/2,153.70
  6. Step 6: Final answer
    x = 1,871.54

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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.