Home / 5,478.60-8,223.30-2,708.40

Finding the Fourth Proportional to 5,478.60, 8,223.30 and 2,708.40

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Solution

The fourth proportional to 5,478.60, 8,223.30 and 2,708.40 is: 4,065.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,478.60 : 8,223.30 = 2,708.40 : x
  2. Step 2: Convert to fraction form
    5,478.60/8,223.30 = 2,708.40/x
  3. Step 3: Cross multiply
    5,478.60x = 8,223.30 × 2,708.40
  4. Step 4: Simplify right side
    5,478.60x = 22,271,985.72
  5. Step 5: Solve for x
    x = 22,271,985.72/5,478.60
  6. Step 6: Final answer
    x = 4,065.27

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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.