Home / 7,865.20-11,796.79-2,319.13

Finding the Fourth Proportional to 7,865.20, 11,796.79 and 2,319.13

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Solution

The fourth proportional to 7,865.20, 11,796.79 and 2,319.13 is: 3,478.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,865.20 : 11,796.79 = 2,319.13 : x
  2. Step 2: Convert to fraction form
    7,865.20/11,796.79 = 2,319.13/x
  3. Step 3: Cross multiply
    7,865.20x = 11,796.79 × 2,319.13
  4. Step 4: Simplify right side
    7,865.20x = 27,358,302.89
  5. Step 5: Solve for x
    x = 27,358,302.89/7,865.20
  6. Step 6: Final answer
    x = 3,478.40

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1.5x scale

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.