Home / 1,816.21-2,505.80-1,030.11

Finding the Fourth Proportional to 1,816.21, 2,505.80 and 1,030.11

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Solution

The fourth proportional to 1,816.21, 2,505.80 and 1,030.11 is: 1,421.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,816.21 : 2,505.80 = 1,030.11 : x
  2. Step 2: Convert to fraction form
    1,816.21/2,505.80 = 1,030.11/x
  3. Step 3: Cross multiply
    1,816.21x = 2,505.80 × 1,030.11
  4. Step 4: Simplify right side
    1,816.21x = 2,581,249.64
  5. Step 5: Solve for x
    x = 2,581,249.64/1,816.21
  6. Step 6: Final answer
    x = 1,421.23

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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.