Home / 8,912.20-13,352.10-5,445.40

Finding the Fourth Proportional to 8,912.20, 13,352.10 and 5,445.40

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Solution

The fourth proportional to 8,912.20, 13,352.10 and 5,445.40 is: 8,158.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,912.20 : 13,352.10 = 5,445.40 : x
  2. Step 2: Convert to fraction form
    8,912.20/13,352.10 = 5,445.40/x
  3. Step 3: Cross multiply
    8,912.20x = 13,352.10 × 5,445.40
  4. Step 4: Simplify right side
    8,912.20x = 72,707,525.34
  5. Step 5: Solve for x
    x = 72,707,525.34/8,912.20
  6. Step 6: Final answer
    x = 8,158.20

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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.