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Finding the Fourth Proportional to 8,894.40, 13,328.64 and 4,999.92

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Solution

The fourth proportional to 8,894.40, 13,328.64 and 4,999.92 is: 7,492.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,894.40 : 13,328.64 = 4,999.92 : x
  2. Step 2: Convert to fraction form
    8,894.40/13,328.64 = 4,999.92/x
  3. Step 3: Cross multiply
    8,894.40x = 13,328.64 × 4,999.92
  4. Step 4: Simplify right side
    8,894.40x = 66,642,133.71
  5. Step 5: Solve for x
    x = 66,642,133.71/8,894.40
  6. Step 6: Final answer
    x = 7,492.59

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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.