Home / 5,221.70-7,206.21-2,864.06

Finding the Fourth Proportional to 5,221.70, 7,206.21 and 2,864.06

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Solution

The fourth proportional to 5,221.70, 7,206.21 and 2,864.06 is: 3,952.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,221.70 : 7,206.21 = 2,864.06 : x
  2. Step 2: Convert to fraction form
    5,221.70/7,206.21 = 2,864.06/x
  3. Step 3: Cross multiply
    5,221.70x = 7,206.21 × 2,864.06
  4. Step 4: Simplify right side
    5,221.70x = 20,639,017.81
  5. Step 5: Solve for x
    x = 20,639,017.81/5,221.70
  6. Step 6: Final answer
    x = 3,952.55

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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.