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Finding the Fourth Proportional to 3,314.89, 4,992.20 and 3,019.64

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Solution

The fourth proportional to 3,314.89, 4,992.20 and 3,019.64 is: 4,547.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,314.89 : 4,992.20 = 3,019.64 : x
  2. Step 2: Convert to fraction form
    3,314.89/4,992.20 = 3,019.64/x
  3. Step 3: Cross multiply
    3,314.89x = 4,992.20 × 3,019.64
  4. Step 4: Simplify right side
    3,314.89x = 15,074,646.81
  5. Step 5: Solve for x
    x = 15,074,646.81/3,314.89
  6. Step 6: Final answer
    x = 4,547.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.