Home / 1,318.10-1,977.69-587.18

Finding the Fourth Proportional to 1,318.10, 1,977.69 and 587.18

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Solution

The fourth proportional to 1,318.10, 1,977.69 and 587.18 is: 881.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318.10 : 1,977.69 = 587.18 : x
  2. Step 2: Convert to fraction form
    1,318.10/1,977.69 = 587.18/x
  3. Step 3: Cross multiply
    1,318.10x = 1,977.69 × 587.18
  4. Step 4: Simplify right side
    1,318.10x = 1,161,260.01
  5. Step 5: Solve for x
    x = 1,161,260.01/1,318.10
  6. Step 6: Final answer
    x = 881.01

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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.