Home / 5,130.29-7,079.79-2,772.42

Finding the Fourth Proportional to 5,130.29, 7,079.79 and 2,772.42

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Solution

The fourth proportional to 5,130.29, 7,079.79 and 2,772.42 is: 3,825.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,130.29 : 7,079.79 = 2,772.42 : x
  2. Step 2: Convert to fraction form
    5,130.29/7,079.79 = 2,772.42/x
  3. Step 3: Cross multiply
    5,130.29x = 7,079.79 × 2,772.42
  4. Step 4: Simplify right side
    5,130.29x = 19,628,151.39
  5. Step 5: Solve for x
    x = 19,628,151.39/5,130.29
  6. Step 6: Final answer
    x = 3,825.94

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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.