Home / 5,209.74-7,189.92-2,972.34

Finding the Fourth Proportional to 5,209.74, 7,189.92 and 2,972.34

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Solution

The fourth proportional to 5,209.74, 7,189.92 and 2,972.34 is: 4,102.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,209.74 : 7,189.92 = 2,972.34 : x
  2. Step 2: Convert to fraction form
    5,209.74/7,189.92 = 2,972.34/x
  3. Step 3: Cross multiply
    5,209.74x = 7,189.92 × 2,972.34
  4. Step 4: Simplify right side
    5,209.74x = 21,370,886.81
  5. Step 5: Solve for x
    x = 21,370,886.81/5,209.74
  6. Step 6: Final answer
    x = 4,102.10

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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.