Home / 3,915.87-5,405.67-2,501.48

Finding the Fourth Proportional to 3,915.87, 5,405.67 and 2,501.48

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Solution

The fourth proportional to 3,915.87, 5,405.67 and 2,501.48 is: 3,453.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,915.87 : 5,405.67 = 2,501.48 : x
  2. Step 2: Convert to fraction form
    3,915.87/5,405.67 = 2,501.48/x
  3. Step 3: Cross multiply
    3,915.87x = 5,405.67 × 2,501.48
  4. Step 4: Simplify right side
    3,915.87x = 13,522,148.36
  5. Step 5: Solve for x
    x = 13,522,148.36/3,915.87
  6. Step 6: Final answer
    x = 3,453.17

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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.