Home / 2,938.21-4,407.25-717.05

Finding the Fourth Proportional to 2,938.21, 4,407.25 and 717.05

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Solution

The fourth proportional to 2,938.21, 4,407.25 and 717.05 is: 1,075.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,938.21 : 4,407.25 = 717.05 : x
  2. Step 2: Convert to fraction form
    2,938.21/4,407.25 = 717.05/x
  3. Step 3: Cross multiply
    2,938.21x = 4,407.25 × 717.05
  4. Step 4: Simplify right side
    2,938.21x = 3,160,194.78
  5. Step 5: Solve for x
    x = 3,160,194.78/2,938.21
  6. Step 6: Final answer
    x = 1,075.55

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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.