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Finding the Fourth Proportional to 7,870.54, 11,800.03 and 3,708.20

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Solution

The fourth proportional to 7,870.54, 11,800.03 and 3,708.20 is: 5,559.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,870.54 : 11,800.03 = 3,708.20 : x
  2. Step 2: Convert to fraction form
    7,870.54/11,800.03 = 3,708.20/x
  3. Step 3: Cross multiply
    7,870.54x = 11,800.03 × 3,708.20
  4. Step 4: Simplify right side
    7,870.54x = 43,756,891.48
  5. Step 5: Solve for x
    x = 43,756,891.48/7,870.54
  6. Step 6: Final answer
    x = 5,559.58

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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.