Home / 3,985.40-5,980.80-2,595.35

Finding the Fourth Proportional to 3,985.40, 5,980.80 and 2,595.35

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Solution

The fourth proportional to 3,985.40, 5,980.80 and 2,595.35 is: 3,894.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,985.40 : 5,980.80 = 2,595.35 : x
  2. Step 2: Convert to fraction form
    3,985.40/5,980.80 = 2,595.35/x
  3. Step 3: Cross multiply
    3,985.40x = 5,980.80 × 2,595.35
  4. Step 4: Simplify right side
    3,985.40x = 15,522,269.28
  5. Step 5: Solve for x
    x = 15,522,269.28/3,985.40
  6. Step 6: Final answer
    x = 3,894.78

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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.