Home / 7,077.60-10,613.70-2,145.60

Finding the Fourth Proportional to 7,077.60, 10,613.70 and 2,145.60

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Solution

The fourth proportional to 7,077.60, 10,613.70 and 2,145.60 is: 3,217.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,077.60 : 10,613.70 = 2,145.60 : x
  2. Step 2: Convert to fraction form
    7,077.60/10,613.70 = 2,145.60/x
  3. Step 3: Cross multiply
    7,077.60x = 10,613.70 × 2,145.60
  4. Step 4: Simplify right side
    7,077.60x = 22,772,754.72
  5. Step 5: Solve for x
    x = 22,772,754.72/7,077.60
  6. Step 6: Final answer
    x = 3,217.58

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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.