Home / 2,390.31-3,580.20-1,926.99

Finding the Fourth Proportional to 2,390.31, 3,580.20 and 1,926.99

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Solution

The fourth proportional to 2,390.31, 3,580.20 and 1,926.99 is: 2,886.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,390.31 : 3,580.20 = 1,926.99 : x
  2. Step 2: Convert to fraction form
    2,390.31/3,580.20 = 1,926.99/x
  3. Step 3: Cross multiply
    2,390.31x = 3,580.20 × 1,926.99
  4. Step 4: Simplify right side
    2,390.31x = 6,899,009.60
  5. Step 5: Solve for x
    x = 6,899,009.60/2,390.31
  6. Step 6: Final answer
    x = 2,886.24

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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.