Home / 8,390.54-12,586.41-2,547.14

Finding the Fourth Proportional to 8,390.54, 12,586.41 and 2,547.14

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Solution

The fourth proportional to 8,390.54, 12,586.41 and 2,547.14 is: 3,820.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,390.54 : 12,586.41 = 2,547.14 : x
  2. Step 2: Convert to fraction form
    8,390.54/12,586.41 = 2,547.14/x
  3. Step 3: Cross multiply
    8,390.54x = 12,586.41 × 2,547.14
  4. Step 4: Simplify right side
    8,390.54x = 32,059,285.44
  5. Step 5: Solve for x
    x = 32,059,285.44/8,390.54
  6. Step 6: Final answer
    x = 3,820.89

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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.