Home / 8,428.16-11,630.98-4,651.26

Finding the Fourth Proportional to 8,428.16, 11,630.98 and 4,651.26

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Solution

The fourth proportional to 8,428.16, 11,630.98 and 4,651.26 is: 6,418.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,428.16 : 11,630.98 = 4,651.26 : x
  2. Step 2: Convert to fraction form
    8,428.16/11,630.98 = 4,651.26/x
  3. Step 3: Cross multiply
    8,428.16x = 11,630.98 × 4,651.26
  4. Step 4: Simplify right side
    8,428.16x = 54,098,712.03
  5. Step 5: Solve for x
    x = 54,098,712.03/8,428.16
  6. Step 6: Final answer
    x = 6,418.80

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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.