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Finding the Fourth Proportional to 7,665.40, 10,578.63 and 4,308.04

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Solution

The fourth proportional to 7,665.40, 10,578.63 and 4,308.04 is: 5,945.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,665.40 : 10,578.63 = 4,308.04 : x
  2. Step 2: Convert to fraction form
    7,665.40/10,578.63 = 4,308.04/x
  3. Step 3: Cross multiply
    7,665.40x = 10,578.63 × 4,308.04
  4. Step 4: Simplify right side
    7,665.40x = 45,573,161.19
  5. Step 5: Solve for x
    x = 45,573,161.19/7,665.40
  6. Step 6: Final answer
    x = 5,945.31

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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.