Home / 8,428.24-11,628.12-4,890.16

Finding the Fourth Proportional to 8,428.24, 11,628.12 and 4,890.16

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Solution

The fourth proportional to 8,428.24, 11,628.12 and 4,890.16 is: 6,746.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,428.24 : 11,628.12 = 4,890.16 : x
  2. Step 2: Convert to fraction form
    8,428.24/11,628.12 = 4,890.16/x
  3. Step 3: Cross multiply
    8,428.24x = 11,628.12 × 4,890.16
  4. Step 4: Simplify right side
    8,428.24x = 56,863,367.30
  5. Step 5: Solve for x
    x = 56,863,367.30/8,428.24
  6. Step 6: Final answer
    x = 6,746.77

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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.