Home / 2,345.66-3,520.51-1,220.72

Finding the Fourth Proportional to 2,345.66, 3,520.51 and 1,220.72

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Solution

The fourth proportional to 2,345.66, 3,520.51 and 1,220.72 is: 1,832.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,345.66 : 3,520.51 = 1,220.72 : x
  2. Step 2: Convert to fraction form
    2,345.66/3,520.51 = 1,220.72/x
  3. Step 3: Cross multiply
    2,345.66x = 3,520.51 × 1,220.72
  4. Step 4: Simplify right side
    2,345.66x = 4,297,562.98
  5. Step 5: Solve for x
    x = 4,297,562.98/2,345.66
  6. Step 6: Final answer
    x = 1,832.13

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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.