Home / 2,970.76-4,099.80-1,644.61

Finding the Fourth Proportional to 2,970.76, 4,099.80 and 1,644.61

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Solution

The fourth proportional to 2,970.76, 4,099.80 and 1,644.61 is: 2,269.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,970.76 : 4,099.80 = 1,644.61 : x
  2. Step 2: Convert to fraction form
    2,970.76/4,099.80 = 1,644.61/x
  3. Step 3: Cross multiply
    2,970.76x = 4,099.80 × 1,644.61
  4. Step 4: Simplify right side
    2,970.76x = 6,742,572.08
  5. Step 5: Solve for x
    x = 6,742,572.08/2,970.76
  6. Step 6: Final answer
    x = 2,269.65

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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.