Home / 1,816.20-2,502.90-1,373.40

Finding the Fourth Proportional to 1,816.20, 2,502.90 and 1,373.40

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Solution

The fourth proportional to 1,816.20, 2,502.90 and 1,373.40 is: 1,892.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,816.20 : 2,502.90 = 1,373.40 : x
  2. Step 2: Convert to fraction form
    1,816.20/2,502.90 = 1,373.40/x
  3. Step 3: Cross multiply
    1,816.20x = 2,502.90 × 1,373.40
  4. Step 4: Simplify right side
    1,816.20x = 3,437,482.86
  5. Step 5: Solve for x
    x = 3,437,482.86/1,816.20
  6. Step 6: Final answer
    x = 1,892.68

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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.