Home / 6,628.56-9,938.85-2,928.90

Finding the Fourth Proportional to 6,628.56, 9,938.85 and 2,928.90

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Solution

The fourth proportional to 6,628.56, 9,938.85 and 2,928.90 is: 4,391.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,628.56 : 9,938.85 = 2,928.90 : x
  2. Step 2: Convert to fraction form
    6,628.56/9,938.85 = 2,928.90/x
  3. Step 3: Cross multiply
    6,628.56x = 9,938.85 × 2,928.90
  4. Step 4: Simplify right side
    6,628.56x = 29,109,897.77
  5. Step 5: Solve for x
    x = 29,109,897.77/6,628.56
  6. Step 6: Final answer
    x = 4,391.59

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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.