Home / 8,428.40-12,632.76-6,341.70

Finding the Fourth Proportional to 8,428.40, 12,632.76 and 6,341.70

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Solution

The fourth proportional to 8,428.40, 12,632.76 and 6,341.70 is: 9,505.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,428.40 : 12,632.76 = 6,341.70 : x
  2. Step 2: Convert to fraction form
    8,428.40/12,632.76 = 6,341.70/x
  3. Step 3: Cross multiply
    8,428.40x = 12,632.76 × 6,341.70
  4. Step 4: Simplify right side
    8,428.40x = 80,113,174.09
  5. Step 5: Solve for x
    x = 80,113,174.09/8,428.40
  6. Step 6: Final answer
    x = 9,505.15

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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.