Home / 1,312.13-1,967.77-581.69

Finding the Fourth Proportional to 1,312.13, 1,967.77 and 581.69

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Solution

The fourth proportional to 1,312.13, 1,967.77 and 581.69 is: 872.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312.13 : 1,967.77 = 581.69 : x
  2. Step 2: Convert to fraction form
    1,312.13/1,967.77 = 581.69/x
  3. Step 3: Cross multiply
    1,312.13x = 1,967.77 × 581.69
  4. Step 4: Simplify right side
    1,312.13x = 1,144,632.13
  5. Step 5: Solve for x
    x = 1,144,632.13/1,312.13
  6. Step 6: Final answer
    x = 872.35

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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.