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Finding the Fourth Proportional to 8,386.89, 12,590.06 and 4,498.89

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Solution

The fourth proportional to 8,386.89, 12,590.06 and 4,498.89 is: 6,753.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,386.89 : 12,590.06 = 4,498.89 : x
  2. Step 2: Convert to fraction form
    8,386.89/12,590.06 = 4,498.89/x
  3. Step 3: Cross multiply
    8,386.89x = 12,590.06 × 4,498.89
  4. Step 4: Simplify right side
    8,386.89x = 56,641,272.54
  5. Step 5: Solve for x
    x = 56,641,272.54/8,386.89
  6. Step 6: Final answer
    x = 6,753.55

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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.