Home / 8,428.08-11,629.40-4,890.60

Finding the Fourth Proportional to 8,428.08, 11,629.40 and 4,890.60

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Solution

The fourth proportional to 8,428.08, 11,629.40 and 4,890.60 is: 6,748.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,428.08 : 11,629.40 = 4,890.60 : x
  2. Step 2: Convert to fraction form
    8,428.08/11,629.40 = 4,890.60/x
  3. Step 3: Cross multiply
    8,428.08x = 11,629.40 × 4,890.60
  4. Step 4: Simplify right side
    8,428.08x = 56,874,743.64
  5. Step 5: Solve for x
    x = 56,874,743.64/8,428.08
  6. Step 6: Final answer
    x = 6,748.24

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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.