Home / 8,720.34-12,035.24-5,585.64

Finding the Fourth Proportional to 8,720.34, 12,035.24 and 5,585.64

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Solution

The fourth proportional to 8,720.34, 12,035.24 and 5,585.64 is: 7,708.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,720.34 : 12,035.24 = 5,585.64 : x
  2. Step 2: Convert to fraction form
    8,720.34/12,035.24 = 5,585.64/x
  3. Step 3: Cross multiply
    8,720.34x = 12,035.24 × 5,585.64
  4. Step 4: Simplify right side
    8,720.34x = 67,224,517.95
  5. Step 5: Solve for x
    x = 67,224,517.95/8,720.34
  6. Step 6: Final answer
    x = 7,708.93

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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.