Home / 2,970.22-4,098.85-1,643.90

Finding the Fourth Proportional to 2,970.22, 4,098.85 and 1,643.90

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Solution

The fourth proportional to 2,970.22, 4,098.85 and 1,643.90 is: 2,268.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,970.22 : 4,098.85 = 1,643.90 : x
  2. Step 2: Convert to fraction form
    2,970.22/4,098.85 = 1,643.90/x
  3. Step 3: Cross multiply
    2,970.22x = 4,098.85 × 1,643.90
  4. Step 4: Simplify right side
    2,970.22x = 6,738,084.16
  5. Step 5: Solve for x
    x = 6,738,084.16/2,970.22
  6. Step 6: Final answer
    x = 2,268.55

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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.