Home / 8,389.14-12,580.40-3,457.50

Finding the Fourth Proportional to 8,389.14, 12,580.40 and 3,457.50

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Solution

The fourth proportional to 8,389.14, 12,580.40 and 3,457.50 is: 5,184.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,389.14 : 12,580.40 = 3,457.50 : x
  2. Step 2: Convert to fraction form
    8,389.14/12,580.40 = 3,457.50/x
  3. Step 3: Cross multiply
    8,389.14x = 12,580.40 × 3,457.50
  4. Step 4: Simplify right side
    8,389.14x = 43,496,733
  5. Step 5: Solve for x
    x = 43,496,733/8,389.14
  6. Step 6: Final answer
    x = 5,184.89

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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.