Home / 8,130.76-12,186.96-5,324.98

Finding the Fourth Proportional to 8,130.76, 12,186.96 and 5,324.98

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Solution

The fourth proportional to 8,130.76, 12,186.96 and 5,324.98 is: 7,981.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,130.76 : 12,186.96 = 5,324.98 : x
  2. Step 2: Convert to fraction form
    8,130.76/12,186.96 = 5,324.98/x
  3. Step 3: Cross multiply
    8,130.76x = 12,186.96 × 5,324.98
  4. Step 4: Simplify right side
    8,130.76x = 64,895,318.26
  5. Step 5: Solve for x
    x = 64,895,318.26/8,130.76
  6. Step 6: Final answer
    x = 7,981.46

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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.