Home / 2,971.89-4,457.84-1,328.40

Finding the Fourth Proportional to 2,971.89, 4,457.84 and 1,328.40

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Solution

The fourth proportional to 2,971.89, 4,457.84 and 1,328.40 is: 1,992.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,971.89 : 4,457.84 = 1,328.40 : x
  2. Step 2: Convert to fraction form
    2,971.89/4,457.84 = 1,328.40/x
  3. Step 3: Cross multiply
    2,971.89x = 4,457.84 × 1,328.40
  4. Step 4: Simplify right side
    2,971.89x = 5,921,788.01
  5. Step 5: Solve for x
    x = 5,921,788.01/2,971.89
  6. Step 6: Final answer
    x = 1,992.60

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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.