Home / 2,040.39-2,813.70-1,815.63

Finding the Fourth Proportional to 2,040.39, 2,813.70 and 1,815.63

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Solution

The fourth proportional to 2,040.39, 2,813.70 and 1,815.63 is: 2,503.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,040.39 : 2,813.70 = 1,815.63 : x
  2. Step 2: Convert to fraction form
    2,040.39/2,813.70 = 1,815.63/x
  3. Step 3: Cross multiply
    2,040.39x = 2,813.70 × 1,815.63
  4. Step 4: Simplify right side
    2,040.39x = 5,108,638.13
  5. Step 5: Solve for x
    x = 5,108,638.13/2,040.39
  6. Step 6: Final answer
    x = 2,503.76

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1.5x scale

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.