Home / 2,485.46-3,430.36-1,438.14

Finding the Fourth Proportional to 2,485.46, 3,430.36 and 1,438.14

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Solution

The fourth proportional to 2,485.46, 3,430.36 and 1,438.14 is: 1,984.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,485.46 : 3,430.36 = 1,438.14 : x
  2. Step 2: Convert to fraction form
    2,485.46/3,430.36 = 1,438.14/x
  3. Step 3: Cross multiply
    2,485.46x = 3,430.36 × 1,438.14
  4. Step 4: Simplify right side
    2,485.46x = 4,933,337.93
  5. Step 5: Solve for x
    x = 4,933,337.93/2,485.46
  6. Step 6: Final answer
    x = 1,984.88

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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.