Home / 9,988.08-13,783.40-5,450.72

Finding the Fourth Proportional to 9,988.08, 13,783.40 and 5,450.72

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Solution

The fourth proportional to 9,988.08, 13,783.40 and 5,450.72 is: 7,521.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,988.08 : 13,783.40 = 5,450.72 : x
  2. Step 2: Convert to fraction form
    9,988.08/13,783.40 = 5,450.72/x
  3. Step 3: Cross multiply
    9,988.08x = 13,783.40 × 5,450.72
  4. Step 4: Simplify right side
    9,988.08x = 75,129,454.05
  5. Step 5: Solve for x
    x = 75,129,454.05/9,988.08
  6. Step 6: Final answer
    x = 7,521.91

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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.