Home / 3,664.40-5,056.85-1,985.81

Finding the Fourth Proportional to 3,664.40, 5,056.85 and 1,985.81

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Solution

The fourth proportional to 3,664.40, 5,056.85 and 1,985.81 is: 2,740.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,664.40 : 5,056.85 = 1,985.81 : x
  2. Step 2: Convert to fraction form
    3,664.40/5,056.85 = 1,985.81/x
  3. Step 3: Cross multiply
    3,664.40x = 5,056.85 × 1,985.81
  4. Step 4: Simplify right side
    3,664.40x = 10,041,933.37
  5. Step 5: Solve for x
    x = 10,041,933.37/3,664.40
  6. Step 6: Final answer
    x = 2,740.40

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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.