Home / 1,342.11-2,012.10-417.09

Finding the Fourth Proportional to 1,342.11, 2,012.10 and 417.09

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Solution

The fourth proportional to 1,342.11, 2,012.10 and 417.09 is: 625.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,342.11 : 2,012.10 = 417.09 : x
  2. Step 2: Convert to fraction form
    1,342.11/2,012.10 = 417.09/x
  3. Step 3: Cross multiply
    1,342.11x = 2,012.10 × 417.09
  4. Step 4: Simplify right side
    1,342.11x = 839,226.79
  5. Step 5: Solve for x
    x = 839,226.79/1,342.11
  6. Step 6: Final answer
    x = 625.30

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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.