Home / 2,970.06-4,455.29-1,121.12

Finding the Fourth Proportional to 2,970.06, 4,455.29 and 1,121.12

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Solution

The fourth proportional to 2,970.06, 4,455.29 and 1,121.12 is: 1,681.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,970.06 : 4,455.29 = 1,121.12 : x
  2. Step 2: Convert to fraction form
    2,970.06/4,455.29 = 1,121.12/x
  3. Step 3: Cross multiply
    2,970.06x = 4,455.29 × 1,121.12
  4. Step 4: Simplify right side
    2,970.06x = 4,994,914.72
  5. Step 5: Solve for x
    x = 4,994,914.72/2,970.06
  6. Step 6: Final answer
    x = 1,681.76

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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.