Home / 8,690.56-13,052.40-5,409.76

Finding the Fourth Proportional to 8,690.56, 13,052.40 and 5,409.76

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Solution

The fourth proportional to 8,690.56, 13,052.40 and 5,409.76 is: 8,124.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,690.56 : 13,052.40 = 5,409.76 : x
  2. Step 2: Convert to fraction form
    8,690.56/13,052.40 = 5,409.76/x
  3. Step 3: Cross multiply
    8,690.56x = 13,052.40 × 5,409.76
  4. Step 4: Simplify right side
    8,690.56x = 70,610,351.42
  5. Step 5: Solve for x
    x = 70,610,351.42/8,690.56
  6. Step 6: Final answer
    x = 8,124.95

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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.