Home / 4,782.92-7,174.38-1,320.08

Finding the Fourth Proportional to 4,782.92, 7,174.38 and 1,320.08

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Solution

The fourth proportional to 4,782.92, 7,174.38 and 1,320.08 is: 1,980.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,782.92 : 7,174.38 = 1,320.08 : x
  2. Step 2: Convert to fraction form
    4,782.92/7,174.38 = 1,320.08/x
  3. Step 3: Cross multiply
    4,782.92x = 7,174.38 × 1,320.08
  4. Step 4: Simplify right side
    4,782.92x = 9,470,755.55
  5. Step 5: Solve for x
    x = 9,470,755.55/4,782.92
  6. Step 6: Final answer
    x = 1,980.12

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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.