Home / 8,886.40-13,316.64-4,991.92

Finding the Fourth Proportional to 8,886.40, 13,316.64 and 4,991.92

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Solution

The fourth proportional to 8,886.40, 13,316.64 and 4,991.92 is: 7,480.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,886.40 : 13,316.64 = 4,991.92 : x
  2. Step 2: Convert to fraction form
    8,886.40/13,316.64 = 4,991.92/x
  3. Step 3: Cross multiply
    8,886.40x = 13,316.64 × 4,991.92
  4. Step 4: Simplify right side
    8,886.40x = 66,475,601.55
  5. Step 5: Solve for x
    x = 66,475,601.55/8,886.40
  6. Step 6: Final answer
    x = 7,480.60

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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.