Home / 2,970.40-4,099.18-1,644.08

Finding the Fourth Proportional to 2,970.40, 4,099.18 and 1,644.08

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Solution

The fourth proportional to 2,970.40, 4,099.18 and 1,644.08 is: 2,268.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,970.40 : 4,099.18 = 1,644.08 : x
  2. Step 2: Convert to fraction form
    2,970.40/4,099.18 = 1,644.08/x
  3. Step 3: Cross multiply
    2,970.40x = 4,099.18 × 1,644.08
  4. Step 4: Simplify right side
    2,970.40x = 6,739,379.85
  5. Step 5: Solve for x
    x = 6,739,379.85/2,970.40
  6. Step 6: Final answer
    x = 2,268.85

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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.