Home / 5,172.47-7,139.27-2,935.65

Finding the Fourth Proportional to 5,172.47, 7,139.27 and 2,935.65

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Solution

The fourth proportional to 5,172.47, 7,139.27 and 2,935.65 is: 4,051.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,172.47 : 7,139.27 = 2,935.65 : x
  2. Step 2: Convert to fraction form
    5,172.47/7,139.27 = 2,935.65/x
  3. Step 3: Cross multiply
    5,172.47x = 7,139.27 × 2,935.65
  4. Step 4: Simplify right side
    5,172.47x = 20,958,432.09
  5. Step 5: Solve for x
    x = 20,958,432.09/5,172.47
  6. Step 6: Final answer
    x = 4,051.92

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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.