Home / 3,071.12-4,602.62-1,121.45

Finding the Fourth Proportional to 3,071.12, 4,602.62 and 1,121.45

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Solution

The fourth proportional to 3,071.12, 4,602.62 and 1,121.45 is: 1,680.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,071.12 : 4,602.62 = 1,121.45 : x
  2. Step 2: Convert to fraction form
    3,071.12/4,602.62 = 1,121.45/x
  3. Step 3: Cross multiply
    3,071.12x = 4,602.62 × 1,121.45
  4. Step 4: Simplify right side
    3,071.12x = 5,161,587.99
  5. Step 5: Solve for x
    x = 5,161,587.99/3,071.12
  6. Step 6: Final answer
    x = 1,680.69

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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.