Home / 5,780.40-8,670.60-2,499.90

Finding the Fourth Proportional to 5,780.40, 8,670.60 and 2,499.90

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Solution

The fourth proportional to 5,780.40, 8,670.60 and 2,499.90 is: 3,749.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,780.40 : 8,670.60 = 2,499.90 : x
  2. Step 2: Convert to fraction form
    5,780.40/8,670.60 = 2,499.90/x
  3. Step 3: Cross multiply
    5,780.40x = 8,670.60 × 2,499.90
  4. Step 4: Simplify right side
    5,780.40x = 21,675,632.94
  5. Step 5: Solve for x
    x = 21,675,632.94/5,780.40
  6. Step 6: Final answer
    x = 3,749.85

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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.