Home / 5,128.80-7,077.81-3,032.92

Finding the Fourth Proportional to 5,128.80, 7,077.81 and 3,032.92

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Solution

The fourth proportional to 5,128.80, 7,077.81 and 3,032.92 is: 4,185.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,128.80 : 7,077.81 = 3,032.92 : x
  2. Step 2: Convert to fraction form
    5,128.80/7,077.81 = 3,032.92/x
  3. Step 3: Cross multiply
    5,128.80x = 7,077.81 × 3,032.92
  4. Step 4: Simplify right side
    5,128.80x = 21,466,431.51
  5. Step 5: Solve for x
    x = 21,466,431.51/5,128.80
  6. Step 6: Final answer
    x = 4,185.47

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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.