Home / 9,109.45-12,571.77-5,130.33

Finding the Fourth Proportional to 9,109.45, 12,571.77 and 5,130.33

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Solution

The fourth proportional to 9,109.45, 12,571.77 and 5,130.33 is: 7,080.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,109.45 : 12,571.77 = 5,130.33 : x
  2. Step 2: Convert to fraction form
    9,109.45/12,571.77 = 5,130.33/x
  3. Step 3: Cross multiply
    9,109.45x = 12,571.77 × 5,130.33
  4. Step 4: Simplify right side
    9,109.45x = 64,497,328.78
  5. Step 5: Solve for x
    x = 64,497,328.78/9,109.45
  6. Step 6: Final answer
    x = 7,080.27

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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.