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Finding the Fourth Proportional to 6,945.51, 10,430.81 and 6,389.19

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Solution

The fourth proportional to 6,945.51, 10,430.81 and 6,389.19 is: 9,595.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,945.51 : 10,430.81 = 6,389.19 : x
  2. Step 2: Convert to fraction form
    6,945.51/10,430.81 = 6,389.19/x
  3. Step 3: Cross multiply
    6,945.51x = 10,430.81 × 6,389.19
  4. Step 4: Simplify right side
    6,945.51x = 66,644,418.96
  5. Step 5: Solve for x
    x = 66,644,418.96/6,945.51
  6. Step 6: Final answer
    x = 9,595.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.