Home / 4,920.16-7,381.74-2,145.52

Finding the Fourth Proportional to 4,920.16, 7,381.74 and 2,145.52

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Solution

The fourth proportional to 4,920.16, 7,381.74 and 2,145.52 is: 3,218.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,920.16 : 7,381.74 = 2,145.52 : x
  2. Step 2: Convert to fraction form
    4,920.16/7,381.74 = 2,145.52/x
  3. Step 3: Cross multiply
    4,920.16x = 7,381.74 × 2,145.52
  4. Step 4: Simplify right side
    4,920.16x = 15,837,670.80
  5. Step 5: Solve for x
    x = 15,837,670.80/4,920.16
  6. Step 6: Final answer
    x = 3,218.93

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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.