Home / 1,869.39-2,790.49-1,715.31

Finding the Fourth Proportional to 1,869.39, 2,790.49 and 1,715.31

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Solution

The fourth proportional to 1,869.39, 2,790.49 and 1,715.31 is: 2,560.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,869.39 : 2,790.49 = 1,715.31 : x
  2. Step 2: Convert to fraction form
    1,869.39/2,790.49 = 1,715.31/x
  3. Step 3: Cross multiply
    1,869.39x = 2,790.49 × 1,715.31
  4. Step 4: Simplify right side
    1,869.39x = 4,786,555.40
  5. Step 5: Solve for x
    x = 4,786,555.40/1,869.39
  6. Step 6: Final answer
    x = 2,560.49

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.