Home / 5,125.09-7,072.95-2,886.75

Finding the Fourth Proportional to 5,125.09, 7,072.95 and 2,886.75

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Solution

The fourth proportional to 5,125.09, 7,072.95 and 2,886.75 is: 3,983.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,125.09 : 7,072.95 = 2,886.75 : x
  2. Step 2: Convert to fraction form
    5,125.09/7,072.95 = 2,886.75/x
  3. Step 3: Cross multiply
    5,125.09x = 7,072.95 × 2,886.75
  4. Step 4: Simplify right side
    5,125.09x = 20,417,838.41
  5. Step 5: Solve for x
    x = 20,417,838.41/5,125.09
  6. Step 6: Final answer
    x = 3,983.90

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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.