Home / 8,143.32-12,182.70-5,130.90

Finding the Fourth Proportional to 8,143.32, 12,182.70 and 5,130.90

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Solution

The fourth proportional to 8,143.32, 12,182.70 and 5,130.90 is: 7,676.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,143.32 : 12,182.70 = 5,130.90 : x
  2. Step 2: Convert to fraction form
    8,143.32/12,182.70 = 5,130.90/x
  3. Step 3: Cross multiply
    8,143.32x = 12,182.70 × 5,130.90
  4. Step 4: Simplify right side
    8,143.32x = 62,508,234.67
  5. Step 5: Solve for x
    x = 62,508,234.67/8,143.32
  6. Step 6: Final answer
    x = 7,676.01

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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.