Home / 1,341.09-1,848.29-991.17

Finding the Fourth Proportional to 1,341.09, 1,848.29 and 991.17

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Solution

The fourth proportional to 1,341.09, 1,848.29 and 991.17 is: 1,366.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,341.09 : 1,848.29 = 991.17 : x
  2. Step 2: Convert to fraction form
    1,341.09/1,848.29 = 991.17/x
  3. Step 3: Cross multiply
    1,341.09x = 1,848.29 × 991.17
  4. Step 4: Simplify right side
    1,341.09x = 1,831,964.64
  5. Step 5: Solve for x
    x = 1,831,964.64/1,341.09
  6. Step 6: Final answer
    x = 1,366.03

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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.