Home / 1,090.04-1,505.30-931.74

Finding the Fourth Proportional to 1,090.04, 1,505.30 and 931.74

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Solution

The fourth proportional to 1,090.04, 1,505.30 and 931.74 is: 1,286.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,090.04 : 1,505.30 = 931.74 : x
  2. Step 2: Convert to fraction form
    1,090.04/1,505.30 = 931.74/x
  3. Step 3: Cross multiply
    1,090.04x = 1,505.30 × 931.74
  4. Step 4: Simplify right side
    1,090.04x = 1,402,548.22
  5. Step 5: Solve for x
    x = 1,402,548.22/1,090.04
  6. Step 6: Final answer
    x = 1,286.69

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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.