Home / 2,453.75-3,386.16-1,391.72

Finding the Fourth Proportional to 2,453.75, 3,386.16 and 1,391.72

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Solution

The fourth proportional to 2,453.75, 3,386.16 and 1,391.72 is: 1,920.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,453.75 : 3,386.16 = 1,391.72 : x
  2. Step 2: Convert to fraction form
    2,453.75/3,386.16 = 1,391.72/x
  3. Step 3: Cross multiply
    2,453.75x = 3,386.16 × 1,391.72
  4. Step 4: Simplify right side
    2,453.75x = 4,712,586.60
  5. Step 5: Solve for x
    x = 4,712,586.60/2,453.75
  6. Step 6: Final answer
    x = 1,920.57

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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.