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Finding the Fourth Proportional to 8,880, 12,254.40 and 5,154

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Solution

The fourth proportional to 8,880, 12,254.40 and 5,154 is: 7,112.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,880 : 12,254.40 = 5,154 : x
  2. Step 2: Convert to fraction form
    8,880/12,254.40 = 5,154/x
  3. Step 3: Cross multiply
    8,880x = 12,254.40 × 5,154
  4. Step 4: Simplify right side
    8,880x = 63,159,177.60
  5. Step 5: Solve for x
    x = 63,159,177.60/8,880
  6. Step 6: Final answer
    x = 7,112.52

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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.