Home / 2,475.12-3,415.67-1,340.80

Finding the Fourth Proportional to 2,475.12, 3,415.67 and 1,340.80

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Solution

The fourth proportional to 2,475.12, 3,415.67 and 1,340.80 is: 1,850.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,475.12 : 3,415.67 = 1,340.80 : x
  2. Step 2: Convert to fraction form
    2,475.12/3,415.67 = 1,340.80/x
  3. Step 3: Cross multiply
    2,475.12x = 3,415.67 × 1,340.80
  4. Step 4: Simplify right side
    2,475.12x = 4,579,730.34
  5. Step 5: Solve for x
    x = 4,579,730.34/2,475.12
  6. Step 6: Final answer
    x = 1,850.31

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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.