Home / 1,977.18-2,729.60-1,479.63

Finding the Fourth Proportional to 1,977.18, 2,729.60 and 1,479.63

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Solution

The fourth proportional to 1,977.18, 2,729.60 and 1,479.63 is: 2,042.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,977.18 : 2,729.60 = 1,479.63 : x
  2. Step 2: Convert to fraction form
    1,977.18/2,729.60 = 1,479.63/x
  3. Step 3: Cross multiply
    1,977.18x = 2,729.60 × 1,479.63
  4. Step 4: Simplify right side
    1,977.18x = 4,038,798.05
  5. Step 5: Solve for x
    x = 4,038,798.05/1,977.18
  6. Step 6: Final answer
    x = 2,042.71

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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.