Home / 9,123.04-13,686-3,930.40

Finding the Fourth Proportional to 9,123.04, 13,686 and 3,930.40

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Solution

The fourth proportional to 9,123.04, 13,686 and 3,930.40 is: 5,896.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,123.04 : 13,686 = 3,930.40 : x
  2. Step 2: Convert to fraction form
    9,123.04/13,686 = 3,930.40/x
  3. Step 3: Cross multiply
    9,123.04x = 13,686 × 3,930.40
  4. Step 4: Simplify right side
    9,123.04x = 53,791,454.40
  5. Step 5: Solve for x
    x = 53,791,454.40/9,123.04
  6. Step 6: Final answer
    x = 5,896.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.