Home / 5,130.42-7,079.99-2,892.12

Finding the Fourth Proportional to 5,130.42, 7,079.99 and 2,892.12

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Solution

The fourth proportional to 5,130.42, 7,079.99 and 2,892.12 is: 3,991.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,130.42 : 7,079.99 = 2,892.12 : x
  2. Step 2: Convert to fraction form
    5,130.42/7,079.99 = 2,892.12/x
  3. Step 3: Cross multiply
    5,130.42x = 7,079.99 × 2,892.12
  4. Step 4: Simplify right side
    5,130.42x = 20,476,166.22
  5. Step 5: Solve for x
    x = 20,476,166.22/5,130.42
  6. Step 6: Final answer
    x = 3,991.13

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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.