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Finding the Fourth Proportional to 4,479.60, 6,720.12 and 1,706.16

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Solution

The fourth proportional to 4,479.60, 6,720.12 and 1,706.16 is: 2,559.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,479.60 : 6,720.12 = 1,706.16 : x
  2. Step 2: Convert to fraction form
    4,479.60/6,720.12 = 1,706.16/x
  3. Step 3: Cross multiply
    4,479.60x = 6,720.12 × 1,706.16
  4. Step 4: Simplify right side
    4,479.60x = 11,465,599.94
  5. Step 5: Solve for x
    x = 11,465,599.94/4,479.60
  6. Step 6: Final answer
    x = 2,559.51

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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.