Home / 2,970.17-4,454.78-1,121.03

Finding the Fourth Proportional to 2,970.17, 4,454.78 and 1,121.03

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Solution

The fourth proportional to 2,970.17, 4,454.78 and 1,121.03 is: 1,681.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,970.17 : 4,454.78 = 1,121.03 : x
  2. Step 2: Convert to fraction form
    2,970.17/4,454.78 = 1,121.03/x
  3. Step 3: Cross multiply
    2,970.17x = 4,454.78 × 1,121.03
  4. Step 4: Simplify right side
    2,970.17x = 4,993,914.14
  5. Step 5: Solve for x
    x = 4,993,914.14/2,970.17
  6. Step 6: Final answer
    x = 1,681.36

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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.