Home / 9,871.40-13,622.04-5,394.33

Finding the Fourth Proportional to 9,871.40, 13,622.04 and 5,394.33

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Solution

The fourth proportional to 9,871.40, 13,622.04 and 5,394.33 is: 7,443.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,871.40 : 13,622.04 = 5,394.33 : x
  2. Step 2: Convert to fraction form
    9,871.40/13,622.04 = 5,394.33/x
  3. Step 3: Cross multiply
    9,871.40x = 13,622.04 × 5,394.33
  4. Step 4: Simplify right side
    9,871.40x = 73,481,779.03
  5. Step 5: Solve for x
    x = 73,481,779.03/9,871.40
  6. Step 6: Final answer
    x = 7,443.90

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1.5x scale

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.