Home / 5,638.36-7,780.94-3,280.50

Finding the Fourth Proportional to 5,638.36, 7,780.94 and 3,280.50

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Solution

The fourth proportional to 5,638.36, 7,780.94 and 3,280.50 is: 4,527.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,638.36 : 7,780.94 = 3,280.50 : x
  2. Step 2: Convert to fraction form
    5,638.36/7,780.94 = 3,280.50/x
  3. Step 3: Cross multiply
    5,638.36x = 7,780.94 × 3,280.50
  4. Step 4: Simplify right side
    5,638.36x = 25,525,360.34
  5. Step 5: Solve for x
    x = 25,525,360.34/5,638.36
  6. Step 6: Final answer
    x = 4,527.09

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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.