Home / 5,678.10-8,517.65-1,980.27

Finding the Fourth Proportional to 5,678.10, 8,517.65 and 1,980.27

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Solution

The fourth proportional to 5,678.10, 8,517.65 and 1,980.27 is: 2,970.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,678.10 : 8,517.65 = 1,980.27 : x
  2. Step 2: Convert to fraction form
    5,678.10/8,517.65 = 1,980.27/x
  3. Step 3: Cross multiply
    5,678.10x = 8,517.65 × 1,980.27
  4. Step 4: Simplify right side
    5,678.10x = 16,867,236.86
  5. Step 5: Solve for x
    x = 16,867,236.86/5,678.10
  6. Step 6: Final answer
    x = 2,970.58

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1.5x scale

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.