Home / 8,688.75-12,000.38-5,889.39

Finding the Fourth Proportional to 8,688.75, 12,000.38 and 5,889.39

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Solution

The fourth proportional to 8,688.75, 12,000.38 and 5,889.39 is: 8,134.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,688.75 : 12,000.38 = 5,889.39 : x
  2. Step 2: Convert to fraction form
    8,688.75/12,000.38 = 5,889.39/x
  3. Step 3: Cross multiply
    8,688.75x = 12,000.38 × 5,889.39
  4. Step 4: Simplify right side
    8,688.75x = 70,674,888.52
  5. Step 5: Solve for x
    x = 70,674,888.52/8,688.75
  6. Step 6: Final answer
    x = 8,134.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.