Home / 4,911.40-6,776.98-2,921.92

Finding the Fourth Proportional to 4,911.40, 6,776.98 and 2,921.92

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Solution

The fourth proportional to 4,911.40, 6,776.98 and 2,921.92 is: 4,031.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,911.40 : 6,776.98 = 2,921.92 : x
  2. Step 2: Convert to fraction form
    4,911.40/6,776.98 = 2,921.92/x
  3. Step 3: Cross multiply
    4,911.40x = 6,776.98 × 2,921.92
  4. Step 4: Simplify right side
    4,911.40x = 19,801,793.40
  5. Step 5: Solve for x
    x = 19,801,793.40/4,911.40
  6. Step 6: Final answer
    x = 4,031.80

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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.