Home / 3,122.39-4,308.93-1,706.12

Finding the Fourth Proportional to 3,122.39, 4,308.93 and 1,706.12

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Solution

The fourth proportional to 3,122.39, 4,308.93 and 1,706.12 is: 2,354.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,122.39 : 4,308.93 = 1,706.12 : x
  2. Step 2: Convert to fraction form
    3,122.39/4,308.93 = 1,706.12/x
  3. Step 3: Cross multiply
    3,122.39x = 4,308.93 × 1,706.12
  4. Step 4: Simplify right side
    3,122.39x = 7,351,530.11
  5. Step 5: Solve for x
    x = 7,351,530.11/3,122.39
  6. Step 6: Final answer
    x = 2,354.45

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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.