Home / 8,271.33-12,405.12-2,428.40

Finding the Fourth Proportional to 8,271.33, 12,405.12 and 2,428.40

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Solution

The fourth proportional to 8,271.33, 12,405.12 and 2,428.40 is: 3,642.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,271.33 : 12,405.12 = 2,428.40 : x
  2. Step 2: Convert to fraction form
    8,271.33/12,405.12 = 2,428.40/x
  3. Step 3: Cross multiply
    8,271.33x = 12,405.12 × 2,428.40
  4. Step 4: Simplify right side
    8,271.33x = 30,124,593.41
  5. Step 5: Solve for x
    x = 30,124,593.41/8,271.33
  6. Step 6: Final answer
    x = 3,642.05

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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.