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Finding the Fourth Proportional to 7,010.55, 10,515.86 and 2,080.22

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Solution

The fourth proportional to 7,010.55, 10,515.86 and 2,080.22 is: 3,120.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,010.55 : 10,515.86 = 2,080.22 : x
  2. Step 2: Convert to fraction form
    7,010.55/10,515.86 = 2,080.22/x
  3. Step 3: Cross multiply
    7,010.55x = 10,515.86 × 2,080.22
  4. Step 4: Simplify right side
    7,010.55x = 21,875,302.29
  5. Step 5: Solve for x
    x = 21,875,302.29/7,010.55
  6. Step 6: Final answer
    x = 3,120.34

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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.