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Finding the Fourth Proportional to 8,587.90, 11,852.00 and 4,811.91

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Solution

The fourth proportional to 8,587.90, 11,852.00 and 4,811.91 is: 6,640.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,587.90 : 11,852.00 = 4,811.91 : x
  2. Step 2: Convert to fraction form
    8,587.90/11,852.00 = 4,811.91/x
  3. Step 3: Cross multiply
    8,587.90x = 11,852.00 × 4,811.91
  4. Step 4: Simplify right side
    8,587.90x = 57,030,798.78
  5. Step 5: Solve for x
    x = 57,030,798.78/8,587.90
  6. Step 6: Final answer
    x = 6,640.83

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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.