Home / 8,930.86-12,323.01-5,391.70

Finding the Fourth Proportional to 8,930.86, 12,323.01 and 5,391.70

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Solution

The fourth proportional to 8,930.86, 12,323.01 and 5,391.70 is: 7,439.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,930.86 : 12,323.01 = 5,391.70 : x
  2. Step 2: Convert to fraction form
    8,930.86/12,323.01 = 5,391.70/x
  3. Step 3: Cross multiply
    8,930.86x = 12,323.01 × 5,391.70
  4. Step 4: Simplify right side
    8,930.86x = 66,441,973.02
  5. Step 5: Solve for x
    x = 66,441,973.02/8,930.86
  6. Step 6: Final answer
    x = 7,439.59

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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.