Home / 5,130.05-7,079.47-2,772.19

Finding the Fourth Proportional to 5,130.05, 7,079.47 and 2,772.19

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Solution

The fourth proportional to 5,130.05, 7,079.47 and 2,772.19 is: 3,825.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,130.05 : 7,079.47 = 2,772.19 : x
  2. Step 2: Convert to fraction form
    5,130.05/7,079.47 = 2,772.19/x
  3. Step 3: Cross multiply
    5,130.05x = 7,079.47 × 2,772.19
  4. Step 4: Simplify right side
    5,130.05x = 19,625,667.41
  5. Step 5: Solve for x
    x = 19,625,667.41/5,130.05
  6. Step 6: Final answer
    x = 3,825.63

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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.