Home / 2,178.02-3,004.08-1,381.58

Finding the Fourth Proportional to 2,178.02, 3,004.08 and 1,381.58

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Solution

The fourth proportional to 2,178.02, 3,004.08 and 1,381.58 is: 1,905.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,178.02 : 3,004.08 = 1,381.58 : x
  2. Step 2: Convert to fraction form
    2,178.02/3,004.08 = 1,381.58/x
  3. Step 3: Cross multiply
    2,178.02x = 3,004.08 × 1,381.58
  4. Step 4: Simplify right side
    2,178.02x = 4,150,376.85
  5. Step 5: Solve for x
    x = 4,150,376.85/2,178.02
  6. Step 6: Final answer
    x = 1,905.57

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.