Home / 7,805.16-11,712.36-2,878.26

Finding the Fourth Proportional to 7,805.16, 11,712.36 and 2,878.26

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Solution

The fourth proportional to 7,805.16, 11,712.36 and 2,878.26 is: 4,319.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,805.16 : 11,712.36 = 2,878.26 : x
  2. Step 2: Convert to fraction form
    7,805.16/11,712.36 = 2,878.26/x
  3. Step 3: Cross multiply
    7,805.16x = 11,712.36 × 2,878.26
  4. Step 4: Simplify right side
    7,805.16x = 33,711,217.29
  5. Step 5: Solve for x
    x = 33,711,217.29/7,805.16
  6. Step 6: Final answer
    x = 4,319.09

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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.