Home / 6,289.85-8,679.47-3,457.15

Finding the Fourth Proportional to 6,289.85, 8,679.47 and 3,457.15

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Solution

The fourth proportional to 6,289.85, 8,679.47 and 3,457.15 is: 4,770.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,289.85 : 8,679.47 = 3,457.15 : x
  2. Step 2: Convert to fraction form
    6,289.85/8,679.47 = 3,457.15/x
  3. Step 3: Cross multiply
    6,289.85x = 8,679.47 × 3,457.15
  4. Step 4: Simplify right side
    6,289.85x = 30,006,210.17
  5. Step 5: Solve for x
    x = 30,006,210.17/6,289.85
  6. Step 6: Final answer
    x = 4,770.57

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.