Home / 3,690.72-5,087.43-2,509.74

Finding the Fourth Proportional to 3,690.72, 5,087.43 and 2,509.74

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Solution

The fourth proportional to 3,690.72, 5,087.43 and 2,509.74 is: 3,459.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,690.72 : 5,087.43 = 2,509.74 : x
  2. Step 2: Convert to fraction form
    3,690.72/5,087.43 = 2,509.74/x
  3. Step 3: Cross multiply
    3,690.72x = 5,087.43 × 2,509.74
  4. Step 4: Simplify right side
    3,690.72x = 12,768,126.57
  5. Step 5: Solve for x
    x = 12,768,126.57/3,690.72
  6. Step 6: Final answer
    x = 3,459.52

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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.