Home / 1,121.93-1,548.35-624.66

Finding the Fourth Proportional to 1,121.93, 1,548.35 and 624.66

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Solution

The fourth proportional to 1,121.93, 1,548.35 and 624.66 is: 862.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121.93 : 1,548.35 = 624.66 : x
  2. Step 2: Convert to fraction form
    1,121.93/1,548.35 = 624.66/x
  3. Step 3: Cross multiply
    1,121.93x = 1,548.35 × 624.66
  4. Step 4: Simplify right side
    1,121.93x = 967,192.31
  5. Step 5: Solve for x
    x = 967,192.31/1,121.93
  6. Step 6: Final answer
    x = 862.08

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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.