Home / 2,485.85-3,425.07-1,856.13

Finding the Fourth Proportional to 2,485.85, 3,425.07 and 1,856.13

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Solution

The fourth proportional to 2,485.85, 3,425.07 and 1,856.13 is: 2,557.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,485.85 : 3,425.07 = 1,856.13 : x
  2. Step 2: Convert to fraction form
    2,485.85/3,425.07 = 1,856.13/x
  3. Step 3: Cross multiply
    2,485.85x = 3,425.07 × 1,856.13
  4. Step 4: Simplify right side
    2,485.85x = 6,357,365.90
  5. Step 5: Solve for x
    x = 6,357,365.90/2,485.85
  6. Step 6: Final answer
    x = 2,557.42

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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.