Home / 5,209.46-7,188.86-2,971.30

Finding the Fourth Proportional to 5,209.46, 7,188.86 and 2,971.30

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Solution

The fourth proportional to 5,209.46, 7,188.86 and 2,971.30 is: 4,100.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,209.46 : 7,188.86 = 2,971.30 : x
  2. Step 2: Convert to fraction form
    5,209.46/7,188.86 = 2,971.30/x
  3. Step 3: Cross multiply
    5,209.46x = 7,188.86 × 2,971.30
  4. Step 4: Simplify right side
    5,209.46x = 21,360,259.72
  5. Step 5: Solve for x
    x = 21,360,259.72/5,209.46
  6. Step 6: Final answer
    x = 4,100.28

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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.