Home / 2,928.17-4,389.65-1,078.84

Finding the Fourth Proportional to 2,928.17, 4,389.65 and 1,078.84

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Solution

The fourth proportional to 2,928.17, 4,389.65 and 1,078.84 is: 1,617.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,928.17 : 4,389.65 = 1,078.84 : x
  2. Step 2: Convert to fraction form
    2,928.17/4,389.65 = 1,078.84/x
  3. Step 3: Cross multiply
    2,928.17x = 4,389.65 × 1,078.84
  4. Step 4: Simplify right side
    2,928.17x = 4,735,730.01
  5. Step 5: Solve for x
    x = 4,735,730.01/2,928.17
  6. Step 6: Final answer
    x = 1,617.30

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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.