Home / 2,528.86-3,489.60-1,409.62

Finding the Fourth Proportional to 2,528.86, 3,489.60 and 1,409.62

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Solution

The fourth proportional to 2,528.86, 3,489.60 and 1,409.62 is: 1,945.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,528.86 : 3,489.60 = 1,409.62 : x
  2. Step 2: Convert to fraction form
    2,528.86/3,489.60 = 1,409.62/x
  3. Step 3: Cross multiply
    2,528.86x = 3,489.60 × 1,409.62
  4. Step 4: Simplify right side
    2,528.86x = 4,919,009.95
  5. Step 5: Solve for x
    x = 4,919,009.95/2,528.86
  6. Step 6: Final answer
    x = 1,945.15

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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.