Home / 1,106.10-1,524.78-810.90

Finding the Fourth Proportional to 1,106.10, 1,524.78 and 810.90

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Solution

The fourth proportional to 1,106.10, 1,524.78 and 810.90 is: 1,117.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,106.10 : 1,524.78 = 810.90 : x
  2. Step 2: Convert to fraction form
    1,106.10/1,524.78 = 810.90/x
  3. Step 3: Cross multiply
    1,106.10x = 1,524.78 × 810.90
  4. Step 4: Simplify right side
    1,106.10x = 1,236,444.10
  5. Step 5: Solve for x
    x = 1,236,444.10/1,106.10
  6. Step 6: Final answer
    x = 1,117.84

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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.