Home / 2,015.16-2,781.45-1,621.50

Finding the Fourth Proportional to 2,015.16, 2,781.45 and 1,621.50

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Solution

The fourth proportional to 2,015.16, 2,781.45 and 1,621.50 is: 2,238.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,015.16 : 2,781.45 = 1,621.50 : x
  2. Step 2: Convert to fraction form
    2,015.16/2,781.45 = 1,621.50/x
  3. Step 3: Cross multiply
    2,015.16x = 2,781.45 × 1,621.50
  4. Step 4: Simplify right side
    2,015.16x = 4,510,121.18
  5. Step 5: Solve for x
    x = 4,510,121.18/2,015.16
  6. Step 6: Final answer
    x = 2,238.10

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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.