Home / 8,561.79-11,815.29-4,785.09

Finding the Fourth Proportional to 8,561.79, 11,815.29 and 4,785.09

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Solution

The fourth proportional to 8,561.79, 11,815.29 and 4,785.09 is: 6,603.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,561.79 : 11,815.29 = 4,785.09 : x
  2. Step 2: Convert to fraction form
    8,561.79/11,815.29 = 4,785.09/x
  3. Step 3: Cross multiply
    8,561.79x = 11,815.29 × 4,785.09
  4. Step 4: Simplify right side
    8,561.79x = 56,537,226.03
  5. Step 5: Solve for x
    x = 56,537,226.03/8,561.79
  6. Step 6: Final answer
    x = 6,603.44

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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.