Home / 1,317.50-1,812.36-1,264.22

Finding the Fourth Proportional to 1,317.50, 1,812.36 and 1,264.22

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Solution

The fourth proportional to 1,317.50, 1,812.36 and 1,264.22 is: 1,739.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,317.50 : 1,812.36 = 1,264.22 : x
  2. Step 2: Convert to fraction form
    1,317.50/1,812.36 = 1,264.22/x
  3. Step 3: Cross multiply
    1,317.50x = 1,812.36 × 1,264.22
  4. Step 4: Simplify right side
    1,317.50x = 2,291,221.76
  5. Step 5: Solve for x
    x = 2,291,221.76/1,317.50
  6. Step 6: Final answer
    x = 1,739.07

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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.