Home / 10,719.61-16,078.92-2,928.40

Finding the Fourth Proportional to 10,719.61, 16,078.92 and 2,928.40

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Solution

The fourth proportional to 10,719.61, 16,078.92 and 2,928.40 is: 4,392.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,719.61 : 16,078.92 = 2,928.40 : x
  2. Step 2: Convert to fraction form
    10,719.61/16,078.92 = 2,928.40/x
  3. Step 3: Cross multiply
    10,719.61x = 16,078.92 × 2,928.40
  4. Step 4: Simplify right side
    10,719.61x = 47,085,509.33
  5. Step 5: Solve for x
    x = 47,085,509.33/10,719.61
  6. Step 6: Final answer
    x = 4,392.46

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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.