Home / 8,428.41-12,642.91-3,162.89

Finding the Fourth Proportional to 8,428.41, 12,642.91 and 3,162.89

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Solution

The fourth proportional to 8,428.41, 12,642.91 and 3,162.89 is: 4,744.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,428.41 : 12,642.91 = 3,162.89 : x
  2. Step 2: Convert to fraction form
    8,428.41/12,642.91 = 3,162.89/x
  3. Step 3: Cross multiply
    8,428.41x = 12,642.91 × 3,162.89
  4. Step 4: Simplify right side
    8,428.41x = 39,988,133.61
  5. Step 5: Solve for x
    x = 39,988,133.61/8,428.41
  6. Step 6: Final answer
    x = 4,744.45

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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.