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Finding the Fourth Proportional to 8,015.65, 12,078.19 and 6,586.81

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Solution

The fourth proportional to 8,015.65, 12,078.19 and 6,586.81 is: 9,925.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,015.65 : 12,078.19 = 6,586.81 : x
  2. Step 2: Convert to fraction form
    8,015.65/12,078.19 = 6,586.81/x
  3. Step 3: Cross multiply
    8,015.65x = 12,078.19 × 6,586.81
  4. Step 4: Simplify right side
    8,015.65x = 79,556,683.66
  5. Step 5: Solve for x
    x = 79,556,683.66/8,015.65
  6. Step 6: Final answer
    x = 9,925.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.