Home / 4,090.40-6,132.55-1,315.49

Finding the Fourth Proportional to 4,090.40, 6,132.55 and 1,315.49

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Solution

The fourth proportional to 4,090.40, 6,132.55 and 1,315.49 is: 1,972.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,090.40 : 6,132.55 = 1,315.49 : x
  2. Step 2: Convert to fraction form
    4,090.40/6,132.55 = 1,315.49/x
  3. Step 3: Cross multiply
    4,090.40x = 6,132.55 × 1,315.49
  4. Step 4: Simplify right side
    4,090.40x = 8,067,308.20
  5. Step 5: Solve for x
    x = 8,067,308.20/4,090.40
  6. Step 6: Final answer
    x = 1,972.25

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1.5x scale

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.