Home / 1,177.11-1,764.18-561.06

Finding the Fourth Proportional to 1,177.11, 1,764.18 and 561.06

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Solution

The fourth proportional to 1,177.11, 1,764.18 and 561.06 is: 840.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,177.11 : 1,764.18 = 561.06 : x
  2. Step 2: Convert to fraction form
    1,177.11/1,764.18 = 561.06/x
  3. Step 3: Cross multiply
    1,177.11x = 1,764.18 × 561.06
  4. Step 4: Simplify right side
    1,177.11x = 989,810.83
  5. Step 5: Solve for x
    x = 989,810.83/1,177.11
  6. Step 6: Final answer
    x = 840.88

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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.