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Finding the Fourth Proportional to 7,888.60, 10,886.36 and 4,351.72

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Solution

The fourth proportional to 7,888.60, 10,886.36 and 4,351.72 is: 6,005.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,888.60 : 10,886.36 = 4,351.72 : x
  2. Step 2: Convert to fraction form
    7,888.60/10,886.36 = 4,351.72/x
  3. Step 3: Cross multiply
    7,888.60x = 10,886.36 × 4,351.72
  4. Step 4: Simplify right side
    7,888.60x = 47,374,390.54
  5. Step 5: Solve for x
    x = 47,374,390.54/7,888.60
  6. Step 6: Final answer
    x = 6,005.42

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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.