Home / 1,981.14-2,730.51-1,715.05

Finding the Fourth Proportional to 1,981.14, 2,730.51 and 1,715.05

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Solution

The fourth proportional to 1,981.14, 2,730.51 and 1,715.05 is: 2,363.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,981.14 : 2,730.51 = 1,715.05 : x
  2. Step 2: Convert to fraction form
    1,981.14/2,730.51 = 1,715.05/x
  3. Step 3: Cross multiply
    1,981.14x = 2,730.51 × 1,715.05
  4. Step 4: Simplify right side
    1,981.14x = 4,682,961.18
  5. Step 5: Solve for x
    x = 4,682,961.18/1,981.14
  6. Step 6: Final answer
    x = 2,363.77

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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.