Home / 7,814.61-11,719.76-3,430.98

Finding the Fourth Proportional to 7,814.61, 11,719.76 and 3,430.98

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Solution

The fourth proportional to 7,814.61, 11,719.76 and 3,430.98 is: 5,145.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,814.61 : 11,719.76 = 3,430.98 : x
  2. Step 2: Convert to fraction form
    7,814.61/11,719.76 = 3,430.98/x
  3. Step 3: Cross multiply
    7,814.61x = 11,719.76 × 3,430.98
  4. Step 4: Simplify right side
    7,814.61x = 40,210,245.01
  5. Step 5: Solve for x
    x = 40,210,245.01/7,814.61
  6. Step 6: Final answer
    x = 5,145.52

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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.