Home / 8,345.22-12,521-3,905.40

Finding the Fourth Proportional to 8,345.22, 12,521 and 3,905.40

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Solution

The fourth proportional to 8,345.22, 12,521 and 3,905.40 is: 5,859.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,345.22 : 12,521 = 3,905.40 : x
  2. Step 2: Convert to fraction form
    8,345.22/12,521 = 3,905.40/x
  3. Step 3: Cross multiply
    8,345.22x = 12,521 × 3,905.40
  4. Step 4: Simplify right side
    8,345.22x = 48,899,513.40
  5. Step 5: Solve for x
    x = 48,899,513.40/8,345.22
  6. Step 6: Final answer
    x = 5,859.58

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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.