Home / 8,428.32-11,630.43-4,651.20

Finding the Fourth Proportional to 8,428.32, 11,630.43 and 4,651.20

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Solution

The fourth proportional to 8,428.32, 11,630.43 and 4,651.20 is: 6,418.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,428.32 : 11,630.43 = 4,651.20 : x
  2. Step 2: Convert to fraction form
    8,428.32/11,630.43 = 4,651.20/x
  3. Step 3: Cross multiply
    8,428.32x = 11,630.43 × 4,651.20
  4. Step 4: Simplify right side
    8,428.32x = 54,095,456.02
  5. Step 5: Solve for x
    x = 54,095,456.02/8,428.32
  6. Step 6: Final answer
    x = 6,418.30

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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.