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Finding the Fourth Proportional to 4,869.60, 7,320.60 and 4,156.80

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Solution

The fourth proportional to 4,869.60, 7,320.60 and 4,156.80 is: 6,249.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,869.60 : 7,320.60 = 4,156.80 : x
  2. Step 2: Convert to fraction form
    4,869.60/7,320.60 = 4,156.80/x
  3. Step 3: Cross multiply
    4,869.60x = 7,320.60 × 4,156.80
  4. Step 4: Simplify right side
    4,869.60x = 30,430,270.08
  5. Step 5: Solve for x
    x = 30,430,270.08/4,869.60
  6. Step 6: Final answer
    x = 6,249.03

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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.