Home / 9,883.11-13,638.40-5,406.76

Finding the Fourth Proportional to 9,883.11, 13,638.40 and 5,406.76

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Solution

The fourth proportional to 9,883.11, 13,638.40 and 5,406.76 is: 7,461.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,883.11 : 13,638.40 = 5,406.76 : x
  2. Step 2: Convert to fraction form
    9,883.11/13,638.40 = 5,406.76/x
  3. Step 3: Cross multiply
    9,883.11x = 13,638.40 × 5,406.76
  4. Step 4: Simplify right side
    9,883.11x = 73,739,555.58
  5. Step 5: Solve for x
    x = 73,739,555.58/9,883.11
  6. Step 6: Final answer
    x = 7,461.17

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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.