Home / 4,747.49-7,120.14-1,415.06

Finding the Fourth Proportional to 4,747.49, 7,120.14 and 1,415.06

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Solution

The fourth proportional to 4,747.49, 7,120.14 and 1,415.06 is: 2,122.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,747.49 : 7,120.14 = 1,415.06 : x
  2. Step 2: Convert to fraction form
    4,747.49/7,120.14 = 1,415.06/x
  3. Step 3: Cross multiply
    4,747.49x = 7,120.14 × 1,415.06
  4. Step 4: Simplify right side
    4,747.49x = 10,075,425.31
  5. Step 5: Solve for x
    x = 10,075,425.31/4,747.49
  6. Step 6: Final answer
    x = 2,122.26

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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.