Home / 5,208.61-7,812.95-2,130.61

Finding the Fourth Proportional to 5,208.61, 7,812.95 and 2,130.61

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Solution

The fourth proportional to 5,208.61, 7,812.95 and 2,130.61 is: 3,195.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,208.61 : 7,812.95 = 2,130.61 : x
  2. Step 2: Convert to fraction form
    5,208.61/7,812.95 = 2,130.61/x
  3. Step 3: Cross multiply
    5,208.61x = 7,812.95 × 2,130.61
  4. Step 4: Simplify right side
    5,208.61x = 16,646,349.40
  5. Step 5: Solve for x
    x = 16,646,349.40/5,208.61
  6. Step 6: Final answer
    x = 3,195.93

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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.