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Finding the Fourth Proportional to 8,645.02, 11,918.12 and 5,807.46

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Solution

The fourth proportional to 8,645.02, 11,918.12 and 5,807.46 is: 8,006.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,645.02 : 11,918.12 = 5,807.46 : x
  2. Step 2: Convert to fraction form
    8,645.02/11,918.12 = 5,807.46/x
  3. Step 3: Cross multiply
    8,645.02x = 11,918.12 × 5,807.46
  4. Step 4: Simplify right side
    8,645.02x = 69,214,005.18
  5. Step 5: Solve for x
    x = 69,214,005.18/8,645.02
  6. Step 6: Final answer
    x = 8,006.23

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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.