Home / 8,428.08-11,628.76-4,890.68

Finding the Fourth Proportional to 8,428.08, 11,628.76 and 4,890.68

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Solution

The fourth proportional to 8,428.08, 11,628.76 and 4,890.68 is: 6,747.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,428.08 : 11,628.76 = 4,890.68 : x
  2. Step 2: Convert to fraction form
    8,428.08/11,628.76 = 4,890.68/x
  3. Step 3: Cross multiply
    8,428.08x = 11,628.76 × 4,890.68
  4. Step 4: Simplify right side
    8,428.08x = 56,872,543.96
  5. Step 5: Solve for x
    x = 56,872,543.96/8,428.08
  6. Step 6: Final answer
    x = 6,747.98

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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.