Home / 3,312.86-4,571.52-1,985.90

Finding the Fourth Proportional to 3,312.86, 4,571.52 and 1,985.90

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Solution

The fourth proportional to 3,312.86, 4,571.52 and 1,985.90 is: 2,740.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,312.86 : 4,571.52 = 1,985.90 : x
  2. Step 2: Convert to fraction form
    3,312.86/4,571.52 = 1,985.90/x
  3. Step 3: Cross multiply
    3,312.86x = 4,571.52 × 1,985.90
  4. Step 4: Simplify right side
    3,312.86x = 9,078,581.57
  5. Step 5: Solve for x
    x = 9,078,581.57/3,312.86
  6. Step 6: Final answer
    x = 2,740.41

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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.