Home / 7,279.21-10,918.77-2,085.10

Finding the Fourth Proportional to 7,279.21, 10,918.77 and 2,085.10

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Solution

The fourth proportional to 7,279.21, 10,918.77 and 2,085.10 is: 3,127.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,279.21 : 10,918.77 = 2,085.10 : x
  2. Step 2: Convert to fraction form
    7,279.21/10,918.77 = 2,085.10/x
  3. Step 3: Cross multiply
    7,279.21x = 10,918.77 × 2,085.10
  4. Step 4: Simplify right side
    7,279.21x = 22,766,727.33
  5. Step 5: Solve for x
    x = 22,766,727.33/7,279.21
  6. Step 6: Final answer
    x = 3,127.64

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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.