Home / 5,478.40-8,200.32-3,913.36

Finding the Fourth Proportional to 5,478.40, 8,200.32 and 3,913.36

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Solution

The fourth proportional to 5,478.40, 8,200.32 and 3,913.36 is: 5,857.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,478.40 : 8,200.32 = 3,913.36 : x
  2. Step 2: Convert to fraction form
    5,478.40/8,200.32 = 3,913.36/x
  3. Step 3: Cross multiply
    5,478.40x = 8,200.32 × 3,913.36
  4. Step 4: Simplify right side
    5,478.40x = 32,090,804.28
  5. Step 5: Solve for x
    x = 32,090,804.28/5,478.40
  6. Step 6: Final answer
    x = 5,857.70

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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.