Home / 8,920.37-12,310.10-5,383.58

Finding the Fourth Proportional to 8,920.37, 12,310.10 and 5,383.58

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Solution

The fourth proportional to 8,920.37, 12,310.10 and 5,383.58 is: 7,429.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,920.37 : 12,310.10 = 5,383.58 : x
  2. Step 2: Convert to fraction form
    8,920.37/12,310.10 = 5,383.58/x
  3. Step 3: Cross multiply
    8,920.37x = 12,310.10 × 5,383.58
  4. Step 4: Simplify right side
    8,920.37x = 66,272,319.69
  5. Step 5: Solve for x
    x = 66,272,319.69/8,920.37
  6. Step 6: Final answer
    x = 7,429.33

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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.