Home / 4,812.10-7,218.70-1,890.02

Finding the Fourth Proportional to 4,812.10, 7,218.70 and 1,890.02

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Solution

The fourth proportional to 4,812.10, 7,218.70 and 1,890.02 is: 2,835.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,812.10 : 7,218.70 = 1,890.02 : x
  2. Step 2: Convert to fraction form
    4,812.10/7,218.70 = 1,890.02/x
  3. Step 3: Cross multiply
    4,812.10x = 7,218.70 × 1,890.02
  4. Step 4: Simplify right side
    4,812.10x = 13,643,487.37
  5. Step 5: Solve for x
    x = 13,643,487.37/4,812.10
  6. Step 6: Final answer
    x = 2,835.25

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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.