Home / 5,186.60-7,778.73-1,488.00

Finding the Fourth Proportional to 5,186.60, 7,778.73 and 1,488.00

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Solution

The fourth proportional to 5,186.60, 7,778.73 and 1,488.00 is: 2,231.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,186.60 : 7,778.73 = 1,488.00 : x
  2. Step 2: Convert to fraction form
    5,186.60/7,778.73 = 1,488.00/x
  3. Step 3: Cross multiply
    5,186.60x = 7,778.73 × 1,488.00
  4. Step 4: Simplify right side
    5,186.60x = 11,574,784.99
  5. Step 5: Solve for x
    x = 11,574,784.99/5,186.60
  6. Step 6: Final answer
    x = 2,231.67

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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.