Home / 2,415.36-3,621.65-1,288.24

Finding the Fourth Proportional to 2,415.36, 3,621.65 and 1,288.24

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Solution

The fourth proportional to 2,415.36, 3,621.65 and 1,288.24 is: 1,931.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,415.36 : 3,621.65 = 1,288.24 : x
  2. Step 2: Convert to fraction form
    2,415.36/3,621.65 = 1,288.24/x
  3. Step 3: Cross multiply
    2,415.36x = 3,621.65 × 1,288.24
  4. Step 4: Simplify right side
    2,415.36x = 4,665,543.73
  5. Step 5: Solve for x
    x = 4,665,543.73/2,415.36
  6. Step 6: Final answer
    x = 1,931.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.