Home / 8,457.40-12,666.66-6,120.28

Finding the Fourth Proportional to 8,457.40, 12,666.66 and 6,120.28

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Solution

The fourth proportional to 8,457.40, 12,666.66 and 6,120.28 is: 9,166.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,457.40 : 12,666.66 = 6,120.28 : x
  2. Step 2: Convert to fraction form
    8,457.40/12,666.66 = 6,120.28/x
  3. Step 3: Cross multiply
    8,457.40x = 12,666.66 × 6,120.28
  4. Step 4: Simplify right side
    8,457.40x = 77,523,505.86
  5. Step 5: Solve for x
    x = 77,523,505.86/8,457.40
  6. Step 6: Final answer
    x = 9,166.35

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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.