Home / 1,111.66-1,534.23-646.06

Finding the Fourth Proportional to 1,111.66, 1,534.23 and 646.06

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Solution

The fourth proportional to 1,111.66, 1,534.23 and 646.06 is: 891.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,111.66 : 1,534.23 = 646.06 : x
  2. Step 2: Convert to fraction form
    1,111.66/1,534.23 = 646.06/x
  3. Step 3: Cross multiply
    1,111.66x = 1,534.23 × 646.06
  4. Step 4: Simplify right side
    1,111.66x = 991,204.63
  5. Step 5: Solve for x
    x = 991,204.63/1,111.66
  6. Step 6: Final answer
    x = 891.64

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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.