Home / 2,405.72-3,319.70-1,410.20

Finding the Fourth Proportional to 2,405.72, 3,319.70 and 1,410.20

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Solution

The fourth proportional to 2,405.72, 3,319.70 and 1,410.20 is: 1,945.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,405.72 : 3,319.70 = 1,410.20 : x
  2. Step 2: Convert to fraction form
    2,405.72/3,319.70 = 1,410.20/x
  3. Step 3: Cross multiply
    2,405.72x = 3,319.70 × 1,410.20
  4. Step 4: Simplify right side
    2,405.72x = 4,681,440.94
  5. Step 5: Solve for x
    x = 4,681,440.94/2,405.72
  6. Step 6: Final answer
    x = 1,945.96

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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.