Home / 4,090.40-6,135.80-2,146.40

Finding the Fourth Proportional to 4,090.40, 6,135.80 and 2,146.40

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Solution

The fourth proportional to 4,090.40, 6,135.80 and 2,146.40 is: 3,219.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,090.40 : 6,135.80 = 2,146.40 : x
  2. Step 2: Convert to fraction form
    4,090.40/6,135.80 = 2,146.40/x
  3. Step 3: Cross multiply
    4,090.40x = 6,135.80 × 2,146.40
  4. Step 4: Simplify right side
    4,090.40x = 13,169,881.12
  5. Step 5: Solve for x
    x = 13,169,881.12/4,090.40
  6. Step 6: Final answer
    x = 3,219.70

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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.