Home / 8,140.55-12,192.37-5,178.99

Finding the Fourth Proportional to 8,140.55, 12,192.37 and 5,178.99

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Solution

The fourth proportional to 8,140.55, 12,192.37 and 5,178.99 is: 7,756.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,140.55 : 12,192.37 = 5,178.99 : x
  2. Step 2: Convert to fraction form
    8,140.55/12,192.37 = 5,178.99/x
  3. Step 3: Cross multiply
    8,140.55x = 12,192.37 × 5,178.99
  4. Step 4: Simplify right side
    8,140.55x = 63,144,162.31
  5. Step 5: Solve for x
    x = 63,144,162.31/8,140.55
  6. Step 6: Final answer
    x = 7,756.74

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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.