Home / 7,688.85-11,538.95-3,309.59

Finding the Fourth Proportional to 7,688.85, 11,538.95 and 3,309.59

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Solution

The fourth proportional to 7,688.85, 11,538.95 and 3,309.59 is: 4,966.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,688.85 : 11,538.95 = 3,309.59 : x
  2. Step 2: Convert to fraction form
    7,688.85/11,538.95 = 3,309.59/x
  3. Step 3: Cross multiply
    7,688.85x = 11,538.95 × 3,309.59
  4. Step 4: Simplify right side
    7,688.85x = 38,189,119.29
  5. Step 5: Solve for x
    x = 38,189,119.29/7,688.85
  6. Step 6: Final answer
    x = 4,966.82

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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.