Home / 2,153.44-2,972.64-1,455.76

Finding the Fourth Proportional to 2,153.44, 2,972.64 and 1,455.76

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Solution

The fourth proportional to 2,153.44, 2,972.64 and 1,455.76 is: 2,009.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,153.44 : 2,972.64 = 1,455.76 : x
  2. Step 2: Convert to fraction form
    2,153.44/2,972.64 = 1,455.76/x
  3. Step 3: Cross multiply
    2,153.44x = 2,972.64 × 1,455.76
  4. Step 4: Simplify right side
    2,153.44x = 4,327,450.41
  5. Step 5: Solve for x
    x = 4,327,450.41/2,153.44
  6. Step 6: Final answer
    x = 2,009.55

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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.