Home / 1,312.00-1,968.20-581.18

Finding the Fourth Proportional to 1,312.00, 1,968.20 and 581.18

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Solution

The fourth proportional to 1,312.00, 1,968.20 and 581.18 is: 871.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312.00 : 1,968.20 = 581.18 : x
  2. Step 2: Convert to fraction form
    1,312.00/1,968.20 = 581.18/x
  3. Step 3: Cross multiply
    1,312.00x = 1,968.20 × 581.18
  4. Step 4: Simplify right side
    1,312.00x = 1,143,867.91
  5. Step 5: Solve for x
    x = 1,143,867.91/1,312.00
  6. Step 6: Final answer
    x = 871.85

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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.