Home / 1,318.20-1,820.58-1,023.02

Finding the Fourth Proportional to 1,318.20, 1,820.58 and 1,023.02

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Solution

The fourth proportional to 1,318.20, 1,820.58 and 1,023.02 is: 1,412.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318.20 : 1,820.58 = 1,023.02 : x
  2. Step 2: Convert to fraction form
    1,318.20/1,820.58 = 1,023.02/x
  3. Step 3: Cross multiply
    1,318.20x = 1,820.58 × 1,023.02
  4. Step 4: Simplify right side
    1,318.20x = 1,862,482.57
  5. Step 5: Solve for x
    x = 1,862,482.57/1,318.20
  6. Step 6: Final answer
    x = 1,412.90

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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.