Home / 10,085.40-13,917.78-5,608.89

Finding the Fourth Proportional to 10,085.40, 13,917.78 and 5,608.89

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Solution

The fourth proportional to 10,085.40, 13,917.78 and 5,608.89 is: 7,740.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,085.40 : 13,917.78 = 5,608.89 : x
  2. Step 2: Convert to fraction form
    10,085.40/13,917.78 = 5,608.89/x
  3. Step 3: Cross multiply
    10,085.40x = 13,917.78 × 5,608.89
  4. Step 4: Simplify right side
    10,085.40x = 78,063,297.06
  5. Step 5: Solve for x
    x = 78,063,297.06/10,085.40
  6. Step 6: Final answer
    x = 7,740.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.