Home / 8,428.02-11,630.70-4,891.92

Finding the Fourth Proportional to 8,428.02, 11,630.70 and 4,891.92

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Solution

The fourth proportional to 8,428.02, 11,630.70 and 4,891.92 is: 6,750.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,428.02 : 11,630.70 = 4,891.92 : x
  2. Step 2: Convert to fraction form
    8,428.02/11,630.70 = 4,891.92/x
  3. Step 3: Cross multiply
    8,428.02x = 11,630.70 × 4,891.92
  4. Step 4: Simplify right side
    8,428.02x = 56,896,453.94
  5. Step 5: Solve for x
    x = 56,896,453.94/8,428.02
  6. Step 6: Final answer
    x = 6,750.87

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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.