Home / 3,938.70-5,907.57-1,017.21

Finding the Fourth Proportional to 3,938.70, 5,907.57 and 1,017.21

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Solution

The fourth proportional to 3,938.70, 5,907.57 and 1,017.21 is: 1,525.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,938.70 : 5,907.57 = 1,017.21 : x
  2. Step 2: Convert to fraction form
    3,938.70/5,907.57 = 1,017.21/x
  3. Step 3: Cross multiply
    3,938.70x = 5,907.57 × 1,017.21
  4. Step 4: Simplify right side
    3,938.70x = 6,009,239.28
  5. Step 5: Solve for x
    x = 6,009,239.28/3,938.70
  6. Step 6: Final answer
    x = 1,525.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.