Home / 4,752.96-7,129.42-1,290.20

Finding the Fourth Proportional to 4,752.96, 7,129.42 and 1,290.20

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Solution

The fourth proportional to 4,752.96, 7,129.42 and 1,290.20 is: 1,935.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,752.96 : 7,129.42 = 1,290.20 : x
  2. Step 2: Convert to fraction form
    4,752.96/7,129.42 = 1,290.20/x
  3. Step 3: Cross multiply
    4,752.96x = 7,129.42 × 1,290.20
  4. Step 4: Simplify right side
    4,752.96x = 9,198,377.68
  5. Step 5: Solve for x
    x = 9,198,377.68/4,752.96
  6. Step 6: Final answer
    x = 1,935.29

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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.