Home / 5,320.55-7,338.47-3,640.21

Finding the Fourth Proportional to 5,320.55, 7,338.47 and 3,640.21

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Solution

The fourth proportional to 5,320.55, 7,338.47 and 3,640.21 is: 5,020.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,320.55 : 7,338.47 = 3,640.21 : x
  2. Step 2: Convert to fraction form
    5,320.55/7,338.47 = 3,640.21/x
  3. Step 3: Cross multiply
    5,320.55x = 7,338.47 × 3,640.21
  4. Step 4: Simplify right side
    5,320.55x = 26,713,535.33
  5. Step 5: Solve for x
    x = 26,713,535.33/5,320.55
  6. Step 6: Final answer
    x = 5,020.82

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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.