Home / 8,884.69-12,255.40-7,120.51

Finding the Fourth Proportional to 8,884.69, 12,255.40 and 7,120.51

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Solution

The fourth proportional to 8,884.69, 12,255.40 and 7,120.51 is: 9,821.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,884.69 : 12,255.40 = 7,120.51 : x
  2. Step 2: Convert to fraction form
    8,884.69/12,255.40 = 7,120.51/x
  3. Step 3: Cross multiply
    8,884.69x = 12,255.40 × 7,120.51
  4. Step 4: Simplify right side
    8,884.69x = 87,264,676.52
  5. Step 5: Solve for x
    x = 87,264,676.52/8,884.69
  6. Step 6: Final answer
    x = 9,821.92

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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.