Home / 2,156.20-2,973.60-1,409.92

Finding the Fourth Proportional to 2,156.20, 2,973.60 and 1,409.92

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Solution

The fourth proportional to 2,156.20, 2,973.60 and 1,409.92 is: 1,944.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,156.20 : 2,973.60 = 1,409.92 : x
  2. Step 2: Convert to fraction form
    2,156.20/2,973.60 = 1,409.92/x
  3. Step 3: Cross multiply
    2,156.20x = 2,973.60 × 1,409.92
  4. Step 4: Simplify right side
    2,156.20x = 4,192,538.11
  5. Step 5: Solve for x
    x = 4,192,538.11/2,156.20
  6. Step 6: Final answer
    x = 1,944.41

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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.