Home / 8,478.28-12,721.08-4,585.44

Finding the Fourth Proportional to 8,478.28, 12,721.08 and 4,585.44

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Solution

The fourth proportional to 8,478.28, 12,721.08 and 4,585.44 is: 6,880.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,478.28 : 12,721.08 = 4,585.44 : x
  2. Step 2: Convert to fraction form
    8,478.28/12,721.08 = 4,585.44/x
  3. Step 3: Cross multiply
    8,478.28x = 12,721.08 × 4,585.44
  4. Step 4: Simplify right side
    8,478.28x = 58,331,749.08
  5. Step 5: Solve for x
    x = 58,331,749.08/8,478.28
  6. Step 6: Final answer
    x = 6,880.14

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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.