Home / 5,420.84-7,480.69-3,182.33

Finding the Fourth Proportional to 5,420.84, 7,480.69 and 3,182.33

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Solution

The fourth proportional to 5,420.84, 7,480.69 and 3,182.33 is: 4,391.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,420.84 : 7,480.69 = 3,182.33 : x
  2. Step 2: Convert to fraction form
    5,420.84/7,480.69 = 3,182.33/x
  3. Step 3: Cross multiply
    5,420.84x = 7,480.69 × 3,182.33
  4. Step 4: Simplify right side
    5,420.84x = 23,806,024.21
  5. Step 5: Solve for x
    x = 23,806,024.21/5,420.84
  6. Step 6: Final answer
    x = 4,391.57

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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.