Home / 7,140.07-10,710.39-1,945.93

Finding the Fourth Proportional to 7,140.07, 10,710.39 and 1,945.93

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Solution

The fourth proportional to 7,140.07, 10,710.39 and 1,945.93 is: 2,918.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,140.07 : 10,710.39 = 1,945.93 : x
  2. Step 2: Convert to fraction form
    7,140.07/10,710.39 = 1,945.93/x
  3. Step 3: Cross multiply
    7,140.07x = 10,710.39 × 1,945.93
  4. Step 4: Simplify right side
    7,140.07x = 20,841,669.21
  5. Step 5: Solve for x
    x = 20,841,669.21/7,140.07
  6. Step 6: Final answer
    x = 2,918.97

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Similar ratio
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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.