Home / 8,688.89-13,033.36-2,115.07

Finding the Fourth Proportional to 8,688.89, 13,033.36 and 2,115.07

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Solution

The fourth proportional to 8,688.89, 13,033.36 and 2,115.07 is: 3,172.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,688.89 : 13,033.36 = 2,115.07 : x
  2. Step 2: Convert to fraction form
    8,688.89/13,033.36 = 2,115.07/x
  3. Step 3: Cross multiply
    8,688.89x = 13,033.36 × 2,115.07
  4. Step 4: Simplify right side
    8,688.89x = 27,566,403.57
  5. Step 5: Solve for x
    x = 27,566,403.57/8,688.89
  6. Step 6: Final answer
    x = 3,172.60

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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.