Home / 5,208.07-7,812.85-1,920.91

Finding the Fourth Proportional to 5,208.07, 7,812.85 and 1,920.91

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Solution

The fourth proportional to 5,208.07, 7,812.85 and 1,920.91 is: 2,881.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,208.07 : 7,812.85 = 1,920.91 : x
  2. Step 2: Convert to fraction form
    5,208.07/7,812.85 = 1,920.91/x
  3. Step 3: Cross multiply
    5,208.07x = 7,812.85 × 1,920.91
  4. Step 4: Simplify right side
    5,208.07x = 15,007,781.69
  5. Step 5: Solve for x
    x = 15,007,781.69/5,208.07
  6. Step 6: Final answer
    x = 2,881.64

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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.