Home / 2,173.58-3,000.84-1,428.79

Finding the Fourth Proportional to 2,173.58, 3,000.84 and 1,428.79

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Solution

The fourth proportional to 2,173.58, 3,000.84 and 1,428.79 is: 1,972.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,173.58 : 3,000.84 = 1,428.79 : x
  2. Step 2: Convert to fraction form
    2,173.58/3,000.84 = 1,428.79/x
  3. Step 3: Cross multiply
    2,173.58x = 3,000.84 × 1,428.79
  4. Step 4: Simplify right side
    2,173.58x = 4,287,555.18
  5. Step 5: Solve for x
    x = 4,287,555.18/2,173.58
  6. Step 6: Final answer
    x = 1,972.58

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1.5x scale

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.