Home / 7,918.39-11,865.08-6,430.37

Finding the Fourth Proportional to 7,918.39, 11,865.08 and 6,430.37

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Solution

The fourth proportional to 7,918.39, 11,865.08 and 6,430.37 is: 9,635.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,918.39 : 11,865.08 = 6,430.37 : x
  2. Step 2: Convert to fraction form
    7,918.39/11,865.08 = 6,430.37/x
  3. Step 3: Cross multiply
    7,918.39x = 11,865.08 × 6,430.37
  4. Step 4: Simplify right side
    7,918.39x = 76,296,822.72
  5. Step 5: Solve for x
    x = 76,296,822.72/7,918.39
  6. Step 6: Final answer
    x = 9,635.40

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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.