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Finding the Fourth Proportional to 8,590.08, 12,878.64 and 5,809.80

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Solution

The fourth proportional to 8,590.08, 12,878.64 and 5,809.80 is: 8,710.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,590.08 : 12,878.64 = 5,809.80 : x
  2. Step 2: Convert to fraction form
    8,590.08/12,878.64 = 5,809.80/x
  3. Step 3: Cross multiply
    8,590.08x = 12,878.64 × 5,809.80
  4. Step 4: Simplify right side
    8,590.08x = 74,822,322.67
  5. Step 5: Solve for x
    x = 74,822,322.67/8,590.08
  6. Step 6: Final answer
    x = 8,710.32

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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.