Home / 3,125.60-4,313.32-1,728.36

Finding the Fourth Proportional to 3,125.60, 4,313.32 and 1,728.36

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Solution

The fourth proportional to 3,125.60, 4,313.32 and 1,728.36 is: 2,385.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,125.60 : 4,313.32 = 1,728.36 : x
  2. Step 2: Convert to fraction form
    3,125.60/4,313.32 = 1,728.36/x
  3. Step 3: Cross multiply
    3,125.60x = 4,313.32 × 1,728.36
  4. Step 4: Simplify right side
    3,125.60x = 7,454,969.76
  5. Step 5: Solve for x
    x = 7,454,969.76/3,125.60
  6. Step 6: Final answer
    x = 2,385.13

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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.