Home / 5,125.47-7,071.93-2,886.90

Finding the Fourth Proportional to 5,125.47, 7,071.93 and 2,886.90

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Solution

The fourth proportional to 5,125.47, 7,071.93 and 2,886.90 is: 3,983.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,125.47 : 7,071.93 = 2,886.90 : x
  2. Step 2: Convert to fraction form
    5,125.47/7,071.93 = 2,886.90/x
  3. Step 3: Cross multiply
    5,125.47x = 7,071.93 × 2,886.90
  4. Step 4: Simplify right side
    5,125.47x = 20,415,954.72
  5. Step 5: Solve for x
    x = 20,415,954.72/5,125.47
  6. Step 6: Final answer
    x = 3,983.24

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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.