Home / 2,528.40-3,489.31-1,409.35

Finding the Fourth Proportional to 2,528.40, 3,489.31 and 1,409.35

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Solution

The fourth proportional to 2,528.40, 3,489.31 and 1,409.35 is: 1,944.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,528.40 : 3,489.31 = 1,409.35 : x
  2. Step 2: Convert to fraction form
    2,528.40/3,489.31 = 1,409.35/x
  3. Step 3: Cross multiply
    2,528.40x = 3,489.31 × 1,409.35
  4. Step 4: Simplify right side
    2,528.40x = 4,917,641.60
  5. Step 5: Solve for x
    x = 4,917,641.60/2,528.40
  6. Step 6: Final answer
    x = 1,944.96

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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.