Home / 2,506.88-3,459.21-1,387.64

Finding the Fourth Proportional to 2,506.88, 3,459.21 and 1,387.64

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Solution

The fourth proportional to 2,506.88, 3,459.21 and 1,387.64 is: 1,914.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,506.88 : 3,459.21 = 1,387.64 : x
  2. Step 2: Convert to fraction form
    2,506.88/3,459.21 = 1,387.64/x
  3. Step 3: Cross multiply
    2,506.88x = 3,459.21 × 1,387.64
  4. Step 4: Simplify right side
    2,506.88x = 4,800,138.16
  5. Step 5: Solve for x
    x = 4,800,138.16/2,506.88
  6. Step 6: Final answer
    x = 1,914.79

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1.5x scale

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.