Home / 8,428.32-11,631.60-4,702.32

Finding the Fourth Proportional to 8,428.32, 11,631.60 and 4,702.32

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Solution

The fourth proportional to 8,428.32, 11,631.60 and 4,702.32 is: 6,489.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,428.32 : 11,631.60 = 4,702.32 : x
  2. Step 2: Convert to fraction form
    8,428.32/11,631.60 = 4,702.32/x
  3. Step 3: Cross multiply
    8,428.32x = 11,631.60 × 4,702.32
  4. Step 4: Simplify right side
    8,428.32x = 54,695,505.31
  5. Step 5: Solve for x
    x = 54,695,505.31/8,428.32
  6. Step 6: Final answer
    x = 6,489.49

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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.