Home / 1,111.80-1,534.29-614.36

Finding the Fourth Proportional to 1,111.80, 1,534.29 and 614.36

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Solution

The fourth proportional to 1,111.80, 1,534.29 and 614.36 is: 847.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,111.80 : 1,534.29 = 614.36 : x
  2. Step 2: Convert to fraction form
    1,111.80/1,534.29 = 614.36/x
  3. Step 3: Cross multiply
    1,111.80x = 1,534.29 × 614.36
  4. Step 4: Simplify right side
    1,111.80x = 942,607.08
  5. Step 5: Solve for x
    x = 942,607.08/1,111.80
  6. Step 6: Final answer
    x = 847.82

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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.