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Finding the Fourth Proportional to 6,430.26, 8,878.79 and 4,935.81

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Solution

The fourth proportional to 6,430.26, 8,878.79 and 4,935.81 is: 6,815.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,430.26 : 8,878.79 = 4,935.81 : x
  2. Step 2: Convert to fraction form
    6,430.26/8,878.79 = 4,935.81/x
  3. Step 3: Cross multiply
    6,430.26x = 8,878.79 × 4,935.81
  4. Step 4: Simplify right side
    6,430.26x = 43,824,020.47
  5. Step 5: Solve for x
    x = 43,824,020.47/6,430.26
  6. Step 6: Final answer
    x = 6,815.28

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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.