Home / 8,790.09-12,128.29-5,203.24

Finding the Fourth Proportional to 8,790.09, 12,128.29 and 5,203.24

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Solution

The fourth proportional to 8,790.09, 12,128.29 and 5,203.24 is: 7,179.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,790.09 : 12,128.29 = 5,203.24 : x
  2. Step 2: Convert to fraction form
    8,790.09/12,128.29 = 5,203.24/x
  3. Step 3: Cross multiply
    8,790.09x = 12,128.29 × 5,203.24
  4. Step 4: Simplify right side
    8,790.09x = 63,106,389.57
  5. Step 5: Solve for x
    x = 63,106,389.57/8,790.09
  6. Step 6: Final answer
    x = 7,179.27

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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.