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Finding the Fourth Proportional to 8,587.67, 12,866.37 and 7,521.59

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Solution

The fourth proportional to 8,587.67, 12,866.37 and 7,521.59 is: 11,269.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,587.67 : 12,866.37 = 7,521.59 : x
  2. Step 2: Convert to fraction form
    8,587.67/12,866.37 = 7,521.59/x
  3. Step 3: Cross multiply
    8,587.67x = 12,866.37 × 7,521.59
  4. Step 4: Simplify right side
    8,587.67x = 96,775,495.60
  5. Step 5: Solve for x
    x = 96,775,495.60/8,587.67
  6. Step 6: Final answer
    x = 11,269.13

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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.