Home / 2,156.99-2,977.08-1,409.60

Finding the Fourth Proportional to 2,156.99, 2,977.08 and 1,409.60

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Solution

The fourth proportional to 2,156.99, 2,977.08 and 1,409.60 is: 1,945.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,156.99 : 2,977.08 = 1,409.60 : x
  2. Step 2: Convert to fraction form
    2,156.99/2,977.08 = 1,409.60/x
  3. Step 3: Cross multiply
    2,156.99x = 2,977.08 × 1,409.60
  4. Step 4: Simplify right side
    2,156.99x = 4,196,491.97
  5. Step 5: Solve for x
    x = 4,196,491.97/2,156.99
  6. Step 6: Final answer
    x = 1,945.53

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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.