Home / 8,580.16-12,870.66-2,661.15

Finding the Fourth Proportional to 8,580.16, 12,870.66 and 2,661.15

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Solution

The fourth proportional to 8,580.16, 12,870.66 and 2,661.15 is: 3,991.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,580.16 : 12,870.66 = 2,661.15 : x
  2. Step 2: Convert to fraction form
    8,580.16/12,870.66 = 2,661.15/x
  3. Step 3: Cross multiply
    8,580.16x = 12,870.66 × 2,661.15
  4. Step 4: Simplify right side
    8,580.16x = 34,250,815.10
  5. Step 5: Solve for x
    x = 34,250,815.10/8,580.16
  6. Step 6: Final answer
    x = 3,991.86

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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.