Home / 5,678.48-8,517.72-1,783.20

Finding the Fourth Proportional to 5,678.48, 8,517.72 and 1,783.20

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Solution

The fourth proportional to 5,678.48, 8,517.72 and 1,783.20 is: 2,674.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,678.48 : 8,517.72 = 1,783.20 : x
  2. Step 2: Convert to fraction form
    5,678.48/8,517.72 = 1,783.20/x
  3. Step 3: Cross multiply
    5,678.48x = 8,517.72 × 1,783.20
  4. Step 4: Simplify right side
    5,678.48x = 15,188,798.30
  5. Step 5: Solve for x
    x = 15,188,798.30/5,678.48
  6. Step 6: Final answer
    x = 2,674.80

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Similar ratio
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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.