Home / 3,415.10-5,122.64-1,075.30

Finding the Fourth Proportional to 3,415.10, 5,122.64 and 1,075.30

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Solution

The fourth proportional to 3,415.10, 5,122.64 and 1,075.30 is: 1,612.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,415.10 : 5,122.64 = 1,075.30 : x
  2. Step 2: Convert to fraction form
    3,415.10/5,122.64 = 1,075.30/x
  3. Step 3: Cross multiply
    3,415.10x = 5,122.64 × 1,075.30
  4. Step 4: Simplify right side
    3,415.10x = 5,508,379.08
  5. Step 5: Solve for x
    x = 5,508,379.08/3,415.10
  6. Step 6: Final answer
    x = 1,612.95

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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.