Home / 7,870.56-11,806.34-2,605.35

Finding the Fourth Proportional to 7,870.56, 11,806.34 and 2,605.35

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Solution

The fourth proportional to 7,870.56, 11,806.34 and 2,605.35 is: 3,908.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,870.56 : 11,806.34 = 2,605.35 : x
  2. Step 2: Convert to fraction form
    7,870.56/11,806.34 = 2,605.35/x
  3. Step 3: Cross multiply
    7,870.56x = 11,806.34 × 2,605.35
  4. Step 4: Simplify right side
    7,870.56x = 30,759,647.92
  5. Step 5: Solve for x
    x = 30,759,647.92/7,870.56
  6. Step 6: Final answer
    x = 3,908.19

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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.