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Finding the Fourth Proportional to 8,590.40, 12,951.86 and 8,537.10

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Solution

The fourth proportional to 8,590.40, 12,951.86 and 8,537.10 is: 12,871.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,590.40 : 12,951.86 = 8,537.10 : x
  2. Step 2: Convert to fraction form
    8,590.40/12,951.86 = 8,537.10/x
  3. Step 3: Cross multiply
    8,590.40x = 12,951.86 × 8,537.10
  4. Step 4: Simplify right side
    8,590.40x = 110,571,324.01
  5. Step 5: Solve for x
    x = 110,571,324.01/8,590.40
  6. Step 6: Final answer
    x = 12,871.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.