Home / 3,915.21-5,403.24-2,586.60

Finding the Fourth Proportional to 3,915.21, 5,403.24 and 2,586.60

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Solution

The fourth proportional to 3,915.21, 5,403.24 and 2,586.60 is: 3,569.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,915.21 : 5,403.24 = 2,586.60 : x
  2. Step 2: Convert to fraction form
    3,915.21/5,403.24 = 2,586.60/x
  3. Step 3: Cross multiply
    3,915.21x = 5,403.24 × 2,586.60
  4. Step 4: Simplify right side
    3,915.21x = 13,976,020.58
  5. Step 5: Solve for x
    x = 13,976,020.58/3,915.21
  6. Step 6: Final answer
    x = 3,569.67

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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.