Home / 1,322.09-1,985.19-1,263.66

Finding the Fourth Proportional to 1,322.09, 1,985.19 and 1,263.66

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Solution

The fourth proportional to 1,322.09, 1,985.19 and 1,263.66 is: 1,897.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,322.09 : 1,985.19 = 1,263.66 : x
  2. Step 2: Convert to fraction form
    1,322.09/1,985.19 = 1,263.66/x
  3. Step 3: Cross multiply
    1,322.09x = 1,985.19 × 1,263.66
  4. Step 4: Simplify right side
    1,322.09x = 2,508,605.20
  5. Step 5: Solve for x
    x = 2,508,605.20/1,322.09
  6. Step 6: Final answer
    x = 1,897.45

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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.