Home / 1,403.42-2,106.68-1,186.74

Finding the Fourth Proportional to 1,403.42, 2,106.68 and 1,186.74

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Solution

The fourth proportional to 1,403.42, 2,106.68 and 1,186.74 is: 1,781.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,403.42 : 2,106.68 = 1,186.74 : x
  2. Step 2: Convert to fraction form
    1,403.42/2,106.68 = 1,186.74/x
  3. Step 3: Cross multiply
    1,403.42x = 2,106.68 × 1,186.74
  4. Step 4: Simplify right side
    1,403.42x = 2,500,075.49
  5. Step 5: Solve for x
    x = 2,500,075.49/1,403.42
  6. Step 6: Final answer
    x = 1,781.42

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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.