Home / 7,939.62-10,955.25-5,143.50

Finding the Fourth Proportional to 7,939.62, 10,955.25 and 5,143.50

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Solution

The fourth proportional to 7,939.62, 10,955.25 and 5,143.50 is: 7,097.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,939.62 : 10,955.25 = 5,143.50 : x
  2. Step 2: Convert to fraction form
    7,939.62/10,955.25 = 5,143.50/x
  3. Step 3: Cross multiply
    7,939.62x = 10,955.25 × 5,143.50
  4. Step 4: Simplify right side
    7,939.62x = 56,348,328.38
  5. Step 5: Solve for x
    x = 56,348,328.38/7,939.62
  6. Step 6: Final answer
    x = 7,097.11

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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.