Home / 8,561.10-12,840.51-2,718.30

Finding the Fourth Proportional to 8,561.10, 12,840.51 and 2,718.30

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Solution

The fourth proportional to 8,561.10, 12,840.51 and 2,718.30 is: 4,077.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,561.10 : 12,840.51 = 2,718.30 : x
  2. Step 2: Convert to fraction form
    8,561.10/12,840.51 = 2,718.30/x
  3. Step 3: Cross multiply
    8,561.10x = 12,840.51 × 2,718.30
  4. Step 4: Simplify right side
    8,561.10x = 34,904,358.33
  5. Step 5: Solve for x
    x = 34,904,358.33/8,561.10
  6. Step 6: Final answer
    x = 4,077.09

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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.