Home / 4,991.28-7,488.12-1,528.56

Finding the Fourth Proportional to 4,991.28, 7,488.12 and 1,528.56

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Solution

The fourth proportional to 4,991.28, 7,488.12 and 1,528.56 is: 2,293.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,991.28 : 7,488.12 = 1,528.56 : x
  2. Step 2: Convert to fraction form
    4,991.28/7,488.12 = 1,528.56/x
  3. Step 3: Cross multiply
    4,991.28x = 7,488.12 × 1,528.56
  4. Step 4: Simplify right side
    4,991.28x = 11,446,040.71
  5. Step 5: Solve for x
    x = 11,446,040.71/4,991.28
  6. Step 6: Final answer
    x = 2,293.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.