Home / 8,130.64-12,190.70-5,348.90

Finding the Fourth Proportional to 8,130.64, 12,190.70 and 5,348.90

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Solution

The fourth proportional to 8,130.64, 12,190.70 and 5,348.90 is: 8,019.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,130.64 : 12,190.70 = 5,348.90 : x
  2. Step 2: Convert to fraction form
    8,130.64/12,190.70 = 5,348.90/x
  3. Step 3: Cross multiply
    8,130.64x = 12,190.70 × 5,348.90
  4. Step 4: Simplify right side
    8,130.64x = 65,206,835.23
  5. Step 5: Solve for x
    x = 65,206,835.23/8,130.64
  6. Step 6: Final answer
    x = 8,019.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.