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Finding the Fourth Proportional to 7,072.70, 10,602.05 and 3,126.10

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Solution

The fourth proportional to 7,072.70, 10,602.05 and 3,126.10 is: 4,686.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,072.70 : 10,602.05 = 3,126.10 : x
  2. Step 2: Convert to fraction form
    7,072.70/10,602.05 = 3,126.10/x
  3. Step 3: Cross multiply
    7,072.70x = 10,602.05 × 3,126.10
  4. Step 4: Simplify right side
    7,072.70x = 33,143,068.51
  5. Step 5: Solve for x
    x = 33,143,068.51/7,072.70
  6. Step 6: Final answer
    x = 4,686.06

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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.