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Finding the Fourth Proportional to 8,585.71, 12,880.55 and 3,039.07

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Solution

The fourth proportional to 8,585.71, 12,880.55 and 3,039.07 is: 4,559.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,585.71 : 12,880.55 = 3,039.07 : x
  2. Step 2: Convert to fraction form
    8,585.71/12,880.55 = 3,039.07/x
  3. Step 3: Cross multiply
    8,585.71x = 12,880.55 × 3,039.07
  4. Step 4: Simplify right side
    8,585.71x = 39,144,893.09
  5. Step 5: Solve for x
    x = 39,144,893.09/8,585.71
  6. Step 6: Final answer
    x = 4,559.31

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1.5x scale

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.