Home / 8,861.18-13,291.90-4,478.81

Finding the Fourth Proportional to 8,861.18, 13,291.90 and 4,478.81

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Solution

The fourth proportional to 8,861.18, 13,291.90 and 4,478.81 is: 6,718.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,861.18 : 13,291.90 = 4,478.81 : x
  2. Step 2: Convert to fraction form
    8,861.18/13,291.90 = 4,478.81/x
  3. Step 3: Cross multiply
    8,861.18x = 13,291.90 × 4,478.81
  4. Step 4: Simplify right side
    8,861.18x = 59,531,816.98
  5. Step 5: Solve for x
    x = 59,531,816.98/8,861.18
  6. Step 6: Final answer
    x = 6,718.28

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1.5x scale

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.