Home / 2,153.76-2,972.51-1,314.95

Finding the Fourth Proportional to 2,153.76, 2,972.51 and 1,314.95

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Solution

The fourth proportional to 2,153.76, 2,972.51 and 1,314.95 is: 1,814.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,153.76 : 2,972.51 = 1,314.95 : x
  2. Step 2: Convert to fraction form
    2,153.76/2,972.51 = 1,314.95/x
  3. Step 3: Cross multiply
    2,153.76x = 2,972.51 × 1,314.95
  4. Step 4: Simplify right side
    2,153.76x = 3,908,705.31
  5. Step 5: Solve for x
    x = 3,908,705.31/2,153.76
  6. Step 6: Final answer
    x = 1,814.83

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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.