Home / 1,347.18-1,858.26-849.40

Finding the Fourth Proportional to 1,347.18, 1,858.26 and 849.40

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Solution

The fourth proportional to 1,347.18, 1,858.26 and 849.40 is: 1,171.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,347.18 : 1,858.26 = 849.40 : x
  2. Step 2: Convert to fraction form
    1,347.18/1,858.26 = 849.40/x
  3. Step 3: Cross multiply
    1,347.18x = 1,858.26 × 849.40
  4. Step 4: Simplify right side
    1,347.18x = 1,578,406.04
  5. Step 5: Solve for x
    x = 1,578,406.04/1,347.18
  6. Step 6: Final answer
    x = 1,171.64

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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.