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Finding the Fourth Proportional to 3,389.46, 4,677.39 and 1,973.40

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Solution

The fourth proportional to 3,389.46, 4,677.39 and 1,973.40 is: 2,723.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,389.46 : 4,677.39 = 1,973.40 : x
  2. Step 2: Convert to fraction form
    3,389.46/4,677.39 = 1,973.40/x
  3. Step 3: Cross multiply
    3,389.46x = 4,677.39 × 1,973.40
  4. Step 4: Simplify right side
    3,389.46x = 9,230,361.43
  5. Step 5: Solve for x
    x = 9,230,361.43/3,389.46
  6. Step 6: Final answer
    x = 2,723.25

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Double scale
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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.