Home / 2,039.28-2,818.80-1,520.16

Finding the Fourth Proportional to 2,039.28, 2,818.80 and 1,520.16

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Solution

The fourth proportional to 2,039.28, 2,818.80 and 1,520.16 is: 2,101.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,039.28 : 2,818.80 = 1,520.16 : x
  2. Step 2: Convert to fraction form
    2,039.28/2,818.80 = 1,520.16/x
  3. Step 3: Cross multiply
    2,039.28x = 2,818.80 × 1,520.16
  4. Step 4: Simplify right side
    2,039.28x = 4,285,027.01
  5. Step 5: Solve for x
    x = 4,285,027.01/2,039.28
  6. Step 6: Final answer
    x = 2,101.25

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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.