Home / 5,186.90-7,157.90-2,948.76

Finding the Fourth Proportional to 5,186.90, 7,157.90 and 2,948.76

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Solution

The fourth proportional to 5,186.90, 7,157.90 and 2,948.76 is: 4,069.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,186.90 : 7,157.90 = 2,948.76 : x
  2. Step 2: Convert to fraction form
    5,186.90/7,157.90 = 2,948.76/x
  3. Step 3: Cross multiply
    5,186.90x = 7,157.90 × 2,948.76
  4. Step 4: Simplify right side
    5,186.90x = 21,106,936.58
  5. Step 5: Solve for x
    x = 21,106,936.58/5,186.90
  6. Step 6: Final answer
    x = 4,069.28

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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.