Home / 2,561.40-3,530.76-2,143.14

Finding the Fourth Proportional to 2,561.40, 3,530.76 and 2,143.14

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Solution

The fourth proportional to 2,561.40, 3,530.76 and 2,143.14 is: 2,954.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,561.40 : 3,530.76 = 2,143.14 : x
  2. Step 2: Convert to fraction form
    2,561.40/3,530.76 = 2,143.14/x
  3. Step 3: Cross multiply
    2,561.40x = 3,530.76 × 2,143.14
  4. Step 4: Simplify right side
    2,561.40x = 7,566,912.99
  5. Step 5: Solve for x
    x = 7,566,912.99/2,561.40
  6. Step 6: Final answer
    x = 2,954.21

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Half scale
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Double scale
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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.