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Finding the Fourth Proportional to 8,603.68, 11,859.28 and 5,804.32

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Solution

The fourth proportional to 8,603.68, 11,859.28 and 5,804.32 is: 8,000.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,603.68 : 11,859.28 = 5,804.32 : x
  2. Step 2: Convert to fraction form
    8,603.68/11,859.28 = 5,804.32/x
  3. Step 3: Cross multiply
    8,603.68x = 11,859.28 × 5,804.32
  4. Step 4: Simplify right side
    8,603.68x = 68,835,056.09
  5. Step 5: Solve for x
    x = 68,835,056.09/8,603.68
  6. Step 6: Final answer
    x = 8,000.65

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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.