Home / 8,428.58-11,629.45-4,891.18

Finding the Fourth Proportional to 8,428.58, 11,629.45 and 4,891.18

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Solution

The fourth proportional to 8,428.58, 11,629.45 and 4,891.18 is: 6,748.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,428.58 : 11,629.45 = 4,891.18 : x
  2. Step 2: Convert to fraction form
    8,428.58/11,629.45 = 4,891.18/x
  3. Step 3: Cross multiply
    8,428.58x = 11,629.45 × 4,891.18
  4. Step 4: Simplify right side
    8,428.58x = 56,881,733.25
  5. Step 5: Solve for x
    x = 56,881,733.25/8,428.58
  6. Step 6: Final answer
    x = 6,748.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.