Home / 8,587.43-12,886.01-3,656.55

Finding the Fourth Proportional to 8,587.43, 12,886.01 and 3,656.55

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Solution

The fourth proportional to 8,587.43, 12,886.01 and 3,656.55 is: 5,486.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,587.43 : 12,886.01 = 3,656.55 : x
  2. Step 2: Convert to fraction form
    8,587.43/12,886.01 = 3,656.55/x
  3. Step 3: Cross multiply
    8,587.43x = 12,886.01 × 3,656.55
  4. Step 4: Simplify right side
    8,587.43x = 47,118,381.22
  5. Step 5: Solve for x
    x = 47,118,381.22/8,587.43
  6. Step 6: Final answer
    x = 5,486.90

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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.