Home / 4,890.72-6,749.28-2,902.80

Finding the Fourth Proportional to 4,890.72, 6,749.28 and 2,902.80

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Solution

The fourth proportional to 4,890.72, 6,749.28 and 2,902.80 is: 4,005.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,890.72 : 6,749.28 = 2,902.80 : x
  2. Step 2: Convert to fraction form
    4,890.72/6,749.28 = 2,902.80/x
  3. Step 3: Cross multiply
    4,890.72x = 6,749.28 × 2,902.80
  4. Step 4: Simplify right side
    4,890.72x = 19,591,809.98
  5. Step 5: Solve for x
    x = 19,591,809.98/4,890.72
  6. Step 6: Final answer
    x = 4,005.92

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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.