Home / 8,190.28-12,274.44-7,665.40

Finding the Fourth Proportional to 8,190.28, 12,274.44 and 7,665.40

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Solution

The fourth proportional to 8,190.28, 12,274.44 and 7,665.40 is: 11,487.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,190.28 : 12,274.44 = 7,665.40 : x
  2. Step 2: Convert to fraction form
    8,190.28/12,274.44 = 7,665.40/x
  3. Step 3: Cross multiply
    8,190.28x = 12,274.44 × 7,665.40
  4. Step 4: Simplify right side
    8,190.28x = 94,088,492.38
  5. Step 5: Solve for x
    x = 94,088,492.38/8,190.28
  6. Step 6: Final answer
    x = 11,487.82

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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.