Home / 2,515.57-3,471.36-1,396.48

Finding the Fourth Proportional to 2,515.57, 3,471.36 and 1,396.48

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Solution

The fourth proportional to 2,515.57, 3,471.36 and 1,396.48 is: 1,927.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,515.57 : 3,471.36 = 1,396.48 : x
  2. Step 2: Convert to fraction form
    2,515.57/3,471.36 = 1,396.48/x
  3. Step 3: Cross multiply
    2,515.57x = 3,471.36 × 1,396.48
  4. Step 4: Simplify right side
    2,515.57x = 4,847,684.81
  5. Step 5: Solve for x
    x = 4,847,684.81/2,515.57
  6. Step 6: Final answer
    x = 1,927.07

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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.