Home / 2,453.85-3,386.31-1,391.63

Finding the Fourth Proportional to 2,453.85, 3,386.31 and 1,391.63

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Solution

The fourth proportional to 2,453.85, 3,386.31 and 1,391.63 is: 1,920.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,453.85 : 3,386.31 = 1,391.63 : x
  2. Step 2: Convert to fraction form
    2,453.85/3,386.31 = 1,391.63/x
  3. Step 3: Cross multiply
    2,453.85x = 3,386.31 × 1,391.63
  4. Step 4: Simplify right side
    2,453.85x = 4,712,499.05
  5. Step 5: Solve for x
    x = 4,712,499.05/2,453.85
  6. Step 6: Final answer
    x = 1,920.45

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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.