Home / 7,988.60-11,031.18-5,009.54

Finding the Fourth Proportional to 7,988.60, 11,031.18 and 5,009.54

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Solution

The fourth proportional to 7,988.60, 11,031.18 and 5,009.54 is: 6,917.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,988.60 : 11,031.18 = 5,009.54 : x
  2. Step 2: Convert to fraction form
    7,988.60/11,031.18 = 5,009.54/x
  3. Step 3: Cross multiply
    7,988.60x = 11,031.18 × 5,009.54
  4. Step 4: Simplify right side
    7,988.60x = 55,261,137.46
  5. Step 5: Solve for x
    x = 55,261,137.46/7,988.60
  6. Step 6: Final answer
    x = 6,917.50

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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.