Home / 5,209.31-7,188.95-2,851.50

Finding the Fourth Proportional to 5,209.31, 7,188.95 and 2,851.50

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Solution

The fourth proportional to 5,209.31, 7,188.95 and 2,851.50 is: 3,935.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,209.31 : 7,188.95 = 2,851.50 : x
  2. Step 2: Convert to fraction form
    5,209.31/7,188.95 = 2,851.50/x
  3. Step 3: Cross multiply
    5,209.31x = 7,188.95 × 2,851.50
  4. Step 4: Simplify right side
    5,209.31x = 20,499,276.67
  5. Step 5: Solve for x
    x = 20,499,276.67/5,209.31
  6. Step 6: Final answer
    x = 3,935.13

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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.