Home / 1,815.09-2,506.23-1,394.78

Finding the Fourth Proportional to 1,815.09, 2,506.23 and 1,394.78

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Solution

The fourth proportional to 1,815.09, 2,506.23 and 1,394.78 is: 1,925.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,815.09 : 2,506.23 = 1,394.78 : x
  2. Step 2: Convert to fraction form
    1,815.09/2,506.23 = 1,394.78/x
  3. Step 3: Cross multiply
    1,815.09x = 2,506.23 × 1,394.78
  4. Step 4: Simplify right side
    1,815.09x = 3,495,626.95
  5. Step 5: Solve for x
    x = 3,495,626.95/1,815.09
  6. Step 6: Final answer
    x = 1,925.87

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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.