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Finding the Fourth Proportional to 4,985.75, 7,477.81 and 3,520.46

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Solution

The fourth proportional to 4,985.75, 7,477.81 and 3,520.46 is: 5,280.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,985.75 : 7,477.81 = 3,520.46 : x
  2. Step 2: Convert to fraction form
    4,985.75/7,477.81 = 3,520.46/x
  3. Step 3: Cross multiply
    4,985.75x = 7,477.81 × 3,520.46
  4. Step 4: Simplify right side
    4,985.75x = 26,325,330.99
  5. Step 5: Solve for x
    x = 26,325,330.99/4,985.75
  6. Step 6: Final answer
    x = 5,280.11

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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.