Home / 8,707.44-12,020.88-5,355.12

Finding the Fourth Proportional to 8,707.44, 12,020.88 and 5,355.12

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Solution

The fourth proportional to 8,707.44, 12,020.88 and 5,355.12 is: 7,392.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,707.44 : 12,020.88 = 5,355.12 : x
  2. Step 2: Convert to fraction form
    8,707.44/12,020.88 = 5,355.12/x
  3. Step 3: Cross multiply
    8,707.44x = 12,020.88 × 5,355.12
  4. Step 4: Simplify right side
    8,707.44x = 64,373,254.91
  5. Step 5: Solve for x
    x = 64,373,254.91/8,707.44
  6. Step 6: Final answer
    x = 7,392.90

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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.