Home / 3,078.28-4,620.49-1,435.98

Finding the Fourth Proportional to 3,078.28, 4,620.49 and 1,435.98

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Solution

The fourth proportional to 3,078.28, 4,620.49 and 1,435.98 is: 2,155.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,078.28 : 4,620.49 = 1,435.98 : x
  2. Step 2: Convert to fraction form
    3,078.28/4,620.49 = 1,435.98/x
  3. Step 3: Cross multiply
    3,078.28x = 4,620.49 × 1,435.98
  4. Step 4: Simplify right side
    3,078.28x = 6,634,931.23
  5. Step 5: Solve for x
    x = 6,634,931.23/3,078.28
  6. Step 6: Final answer
    x = 2,155.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.