Home / 7,856.72-11,788.91-3,697.13

Finding the Fourth Proportional to 7,856.72, 11,788.91 and 3,697.13

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Solution

The fourth proportional to 7,856.72, 11,788.91 and 3,697.13 is: 5,547.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,856.72 : 11,788.91 = 3,697.13 : x
  2. Step 2: Convert to fraction form
    7,856.72/11,788.91 = 3,697.13/x
  3. Step 3: Cross multiply
    7,856.72x = 11,788.91 × 3,697.13
  4. Step 4: Simplify right side
    7,856.72x = 43,585,143.81
  5. Step 5: Solve for x
    x = 43,585,143.81/7,856.72
  6. Step 6: Final answer
    x = 5,547.50

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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.