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Finding the Fourth Proportional to 3,245.62, 4,477.71 and 1,985.67

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Solution

The fourth proportional to 3,245.62, 4,477.71 and 1,985.67 is: 2,739.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,245.62 : 4,477.71 = 1,985.67 : x
  2. Step 2: Convert to fraction form
    3,245.62/4,477.71 = 1,985.67/x
  3. Step 3: Cross multiply
    3,245.62x = 4,477.71 × 1,985.67
  4. Step 4: Simplify right side
    3,245.62x = 8,891,254.42
  5. Step 5: Solve for x
    x = 8,891,254.42/3,245.62
  6. Step 6: Final answer
    x = 2,739.46

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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.