Home / 5,228.28-7,215.53-2,989.71

Finding the Fourth Proportional to 5,228.28, 7,215.53 and 2,989.71

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Solution

The fourth proportional to 5,228.28, 7,215.53 and 2,989.71 is: 4,126.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,228.28 : 7,215.53 = 2,989.71 : x
  2. Step 2: Convert to fraction form
    5,228.28/7,215.53 = 2,989.71/x
  3. Step 3: Cross multiply
    5,228.28x = 7,215.53 × 2,989.71
  4. Step 4: Simplify right side
    5,228.28x = 21,572,327.25
  5. Step 5: Solve for x
    x = 21,572,327.25/5,228.28
  6. Step 6: Final answer
    x = 4,126.08

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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.