Home / 1,412.10-2,118.30-1,103.35

Finding the Fourth Proportional to 1,412.10, 2,118.30 and 1,103.35

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Solution

The fourth proportional to 1,412.10, 2,118.30 and 1,103.35 is: 1,655.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,412.10 : 2,118.30 = 1,103.35 : x
  2. Step 2: Convert to fraction form
    1,412.10/2,118.30 = 1,103.35/x
  3. Step 3: Cross multiply
    1,412.10x = 2,118.30 × 1,103.35
  4. Step 4: Simplify right side
    1,412.10x = 2,337,226.31
  5. Step 5: Solve for x
    x = 2,337,226.31/1,412.10
  6. Step 6: Final answer
    x = 1,655.14

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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.