Home / 3,125.96-4,313.82-1,690.32

Finding the Fourth Proportional to 3,125.96, 4,313.82 and 1,690.32

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Solution

The fourth proportional to 3,125.96, 4,313.82 and 1,690.32 is: 2,332.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,125.96 : 4,313.82 = 1,690.32 : x
  2. Step 2: Convert to fraction form
    3,125.96/4,313.82 = 1,690.32/x
  3. Step 3: Cross multiply
    3,125.96x = 4,313.82 × 1,690.32
  4. Step 4: Simplify right side
    3,125.96x = 7,291,727.34
  5. Step 5: Solve for x
    x = 7,291,727.34/3,125.96
  6. Step 6: Final answer
    x = 2,332.63

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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.