Home / 1,218.47-1,677.96-1,058.89

Finding the Fourth Proportional to 1,218.47, 1,677.96 and 1,058.89

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Solution

The fourth proportional to 1,218.47, 1,677.96 and 1,058.89 is: 1,458.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218.47 : 1,677.96 = 1,058.89 : x
  2. Step 2: Convert to fraction form
    1,218.47/1,677.96 = 1,058.89/x
  3. Step 3: Cross multiply
    1,218.47x = 1,677.96 × 1,058.89
  4. Step 4: Simplify right side
    1,218.47x = 1,776,775.06
  5. Step 5: Solve for x
    x = 1,776,775.06/1,218.47
  6. Step 6: Final answer
    x = 1,458.20

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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.