Home / 9,376.76-12,939.58-5,185.08

Finding the Fourth Proportional to 9,376.76, 12,939.58 and 5,185.08

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Solution

The fourth proportional to 9,376.76, 12,939.58 and 5,185.08 is: 7,155.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,376.76 : 12,939.58 = 5,185.08 : x
  2. Step 2: Convert to fraction form
    9,376.76/12,939.58 = 5,185.08/x
  3. Step 3: Cross multiply
    9,376.76x = 12,939.58 × 5,185.08
  4. Step 4: Simplify right side
    9,376.76x = 67,092,757.47
  5. Step 5: Solve for x
    x = 67,092,757.47/9,376.76
  6. Step 6: Final answer
    x = 7,155.22

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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.