Home / 8,428.60-12,636.30-5,141.08

Finding the Fourth Proportional to 8,428.60, 12,636.30 and 5,141.08

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Solution

The fourth proportional to 8,428.60, 12,636.30 and 5,141.08 is: 7,707.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,428.60 : 12,636.30 = 5,141.08 : x
  2. Step 2: Convert to fraction form
    8,428.60/12,636.30 = 5,141.08/x
  3. Step 3: Cross multiply
    8,428.60x = 12,636.30 × 5,141.08
  4. Step 4: Simplify right side
    8,428.60x = 64,964,229.20
  5. Step 5: Solve for x
    x = 64,964,229.20/8,428.60
  6. Step 6: Final answer
    x = 7,707.59

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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.