Home / 7,685.10-11,526.26-2,688.21

Finding the Fourth Proportional to 7,685.10, 11,526.26 and 2,688.21

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Solution

The fourth proportional to 7,685.10, 11,526.26 and 2,688.21 is: 4,031.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,685.10 : 11,526.26 = 2,688.21 : x
  2. Step 2: Convert to fraction form
    7,685.10/11,526.26 = 2,688.21/x
  3. Step 3: Cross multiply
    7,685.10x = 11,526.26 × 2,688.21
  4. Step 4: Simplify right side
    7,685.10x = 30,984,993.95
  5. Step 5: Solve for x
    x = 30,984,993.95/7,685.10
  6. Step 6: Final answer
    x = 4,031.83

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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.