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Finding the Fourth Proportional to 2,907.45, 4,012.49 and 1,712.49

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Solution

The fourth proportional to 2,907.45, 4,012.49 and 1,712.49 is: 2,363.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,907.45 : 4,012.49 = 1,712.49 : x
  2. Step 2: Convert to fraction form
    2,907.45/4,012.49 = 1,712.49/x
  3. Step 3: Cross multiply
    2,907.45x = 4,012.49 × 1,712.49
  4. Step 4: Simplify right side
    2,907.45x = 6,871,340.44
  5. Step 5: Solve for x
    x = 6,871,340.44/2,907.45
  6. Step 6: Final answer
    x = 2,363.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.