Home / 2,153.43-2,972.19-1,313.95

Finding the Fourth Proportional to 2,153.43, 2,972.19 and 1,313.95

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Solution

The fourth proportional to 2,153.43, 2,972.19 and 1,313.95 is: 1,813.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,153.43 : 2,972.19 = 1,313.95 : x
  2. Step 2: Convert to fraction form
    2,153.43/2,972.19 = 1,313.95/x
  3. Step 3: Cross multiply
    2,153.43x = 2,972.19 × 1,313.95
  4. Step 4: Simplify right side
    2,153.43x = 3,905,311.51
  5. Step 5: Solve for x
    x = 3,905,311.51/2,153.43
  6. Step 6: Final answer
    x = 1,813.53

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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.